Number of results: 130,958

**math**

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not a multiple choice ...

*March 1, 2012 by Dee -Ann*

**math**

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? a) shadows and similar triangles b) mirrors and similar triangles c) small triangles nested within larger triangles. (it's not a multiple choice ...

*March 1, 2012 by Reyna*

**math**

The base in the Sierpinski triangle has 1 white triangle and zero black triangles. The first iteration has 3 white triangles and 1 black triangle. The second iteration has 9 white triangles and 4 black triangles. The third iteration has 27 white triangles and 13 black ...

*October 28, 2010 by anonymous*

**Math**

Triangle ABC has coordinates A(-4,-2), B(0,-2), and C(-4,1). Triangle DEF has coordinates D(3,6), E(3,2), and F(0,2). Use coordinate geometry to determine if these two triangles are congruent. If they are not congruent, state the reason. A: The triangles are congruent. B: The ...

*March 1, 2017 by Reeces*

**math**

mat e. matics starts to construct a series of triangles. all the triangles are drawn such that the sum of the base and height are always 10cm. determine the maximum area of all these triangles.

*January 21, 2009 by garry*

**Math (please check my answer)**

he figure below shows two triangles. Which statement about the triangles is true? i.imgsafe(.)org/c6dcf267d1.jpg The triangles are congruent by: 1. AAS<<< 2. ASA 3. SAS 4. They are not congruent

*November 28, 2016 by Ren*

**Algebra Alley(MATH)**

Triangles ABC and RST are similar triangles. Angle A=2(x+15)^0 angle S=3x^0,and angle C=x^0. What are the measures of angles B,R,and T? What kind of triangles are they?

*September 20, 2010 by Bionca*

**Geometry**

Does the angle-side relationship in triangles correspond with specific triangles or does it apply in all triangles?

*January 14, 2015 by A*

**Trig**

Can someone check my answers? Find # of triangles possible: <A=44.3, a=11.5, b=7.7 ... 2 triangles, B=~27.9 or B=~152.1 <A=29.3, b=20.5, a=12.8 ... 2 triangles, B=~51.6 or B=~128.4

*September 21, 2016 by K*

**Math**

The first pattern of triangles it uses 4 matches ( 3 matches for build a triangle and 1 matches for connected to other triangles). a)Find the number of triangles if there are 100 matches? b) write the formulas

*October 26, 2016 by Anonymous*

**TRIANGLE HELP!!!! (MATH!)**

The two triangles above are similar. a. Find x using the ratio of the sides 12 cm and 16 cm: x/20 = 12/16 Show your work. b. Find x using the ratio of the sides 6 cm and 8 cm. Show your work. c. Explain why the answers to (a) and (b) should be the same. (The small triangles ...

*November 17, 2016 by Agal*

**math**

drawing several kinds of triangles including a right triangle, than draw a square on each of the sides of the triangles. compute the area of the squares and use this information to investigate whether the pythagorean theorem works for only the right triangles.(use a geometry ...

*May 16, 2012 by sue*

**Math**

The figure below shows two triangles. Which statement about the triangles is true? i.imgsafe(.)org/c60dcd0488(.)jpg The triangles can be proven congruent by: 1. Angle angle side <<< 2. Angle side angle 3. Side angle side 4. The triangles cannot be proven congruent

*November 28, 2016 by Sara*

**Math Question**

Which one of the following pairs of triangle must be similar? a) two isosceles triangles with congruent vertex angles b) two right triangles c) two scalene triangles with congruent bases d) two obtuse triangles a) if the two vertex angles are the same then the other two angles...

*March 4, 2007 by Becky*

**math**

I'm doing The Ambiguos case of triangles given SSA. My givens are a=6; b=7; alpha=30 degrees. how do I know if there's 2 triangles?

*January 13, 2010 by Natalie*

**math**

the lengths of the sides of four triangles are listed as follows. which two triangles are similar? explain. a~ 5 cm, 6 cm, 8 cm b~ 6 cm, 7 cm, 8 cm c~ 8 cm, 10 cm, 12 cm d~ 12 cm, 15 cm, 18 cm

*December 4, 2010 by Anonymous*

**algebra**

Jeff made some designs using equilateral triangles, as shown bellow. He noticed that as he added new triangles, there was a relationship between the number of triangles, and the outer perimeter of the design. If the pattern is continued, what would be the outer perimeter of a ...

*November 13, 2011 by Anonymous*

**Math**

Bernice made a kite by putting 2 triangles together the base of each triangles is 9 inches The height of each triangles is 12 inches and the height of the other triangle is 16 inches What is the area of the kite?show your work.!!!

*April 28, 2009 by erika*

**Math**

I have a triangle with equal sides. Then a s cons triangle is put in the middle so I have four triangles. Triangles are continued to be put instead so I have more and more triangles. As more triangles are added in the same space, the size of them are getting smaller. Could you...

*February 3, 2016 by Sami*

**Math Help**

The triangles are similar. Find the value of x. The triangles are right triangles. Triangle 1 has 18 on the left side and 24 on the left side. Triangle 2 has x on the left side and 6 on the right side. The triangles are facing each other. A. 6 B. 8 C. 30 D. 72 Is the answer B...

*November 20, 2014 by callie*

**math**

An equilateral triangle with a base of 20 cm and a height of 17.3 cm is divided into 4 smaller equilateral triangles. What is true about this figure? A. The total perimeter of all 4 triangles is 70 cm. B. The total area of all 4 small triangles is the same as the area of the ...

*April 15, 2016 by mimirocks16*

**6th grade math**

Bernice made a kite by putting 2 triangles together The base of each trangle is 9 inches The height of each triangles is 12inches and the height of each triangles is 16 inches What is the area of the kite ? show your work (hint the area of a triangle is 1/2bh)

*April 28, 2009 by erika*

**math**

Assume that the sides of triangles are limited to whole-number measures. How many different triangles have a perimeter of 12 meters? Explain how you determined this.

*March 28, 2011 by JV*

**Math**

One of two similar triangles has an area of 1/4 times that of the other. What is the ratio of its perimeter of the triangles? (I know the answer but I don't know the solution, please explain. Thank you very much!!)

*February 22, 2015 by Anonymous*

**Math**

If a triangl if a triangle triangle has a perimeter of three units with a row of two connecting triangles the parameters for units what is the perimeter of a row of Tronic 20 triangles triangles

*November 10, 2015 by Kim*

**math**

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following method? small triangles nested within larger triangles.

*March 1, 2012 by HELP HELP HELP*

**calculus**

The base of a solid is a circle of radius = 4 Find the exact volume of this solid if the cross sections perpendicular to a given axis are equilateral right triangles. I have the area of the triangle (1/2bh) to be equal to 2sqrt(12) (1/2 * 4 * sqrt12) I don't know what to do ...

*April 22, 2007 by mark*

**math**

The scale factor of two similar triangles is 2/5. if the perimeter of the small triangles is 80 cm, what is the perimeter of the large triangle?

*April 2, 2011 by Anonymous*

**math**

How many different triangles can you make with a perimeter of 12 units And also use integer values for the length of the sides to investigate how to make up your triangles

*March 8, 2015 by JBeeee*

**math**

if possible,draw two isosceles triangle in which all the equal-length sides in both triangles are congruent, but the two triangles themselves are not similar.

*May 20, 2009 by here*

**math i don't get it**

If 6 equilateral triangles are placed side by side so that only two sides of each triangle touch one of the other triangles, what shape is formed? Please explain the answer.

*December 17, 2012 by Anonymous*

**Math**

If six equilateral triangles are placed side by side so that only two sides of each triangle touch one of the other triangles what shape is formed? We are thinking circle?

*April 19, 2014 by Kelley*

**math**

The large red equilateral triangle has sides of 8x units. The midpoints of the red triangle are joined to form the blue triangle. The midpoints of the blue triangle ate joined to form the green triangle. The process of joining midpoints to form new triangles continues ...

*January 11, 2016 by Jo*

**Math**

How do I determine which of theses triangles are right triangles or not? I am given a table with: Traingle | Side 1| Side 2| Side 3| Q |6 6 30 R |6 4 10 S |5 4 41 T |5 4 3 I Know the equation a^2+b^2=c^2, and have applied it to this, but cannot get an answer…Help me please.

*November 24, 2015 by Not Telling*

**math trigg.**

which triangles do you use COS SIN or TAN?? You can use these relations on any ANGLE. THe sin, cos, and tan are dependent on the angle, it does not matter if the angles are in triangles, or if they are, what kind of triangle. Right triangles are especially helpful when using ...

*June 18, 2006 by shelby*

**math/geometry pls help**

A coin of radius 1 cm is tossed onto a plane surface that has been tesselated by right triangles whose sides are 8 cm, 15 cm, and 17 cm long. What is the probability that the coin lands within one of the triangles?

*April 21, 2010 by Eunice*

**Math**

In this 2x3 grid, each lattice point is one unit away from its nearest neighbors. A total of 14 isosceles triangles(but not right triangles), each with an area of ½u squared have only two vertices that are one unit apart in the grid. how many such half-unit triangles have at ...

*October 25, 2016 by bob*

**Math**

Which of the triangles described in the table is a right triangle? Triangles: Q, R, S, T Side 1: Q = 25, R = 26, S = 25, T = 25 Side 2: Q = 20, R = 20, S = 20, T = 26 Side 3: Q = 15, R = 26, S = 1,025, T = 650

*November 30, 2012 by Kitralia Brown*

**math**

It is a proof. Given: line DB bisects line AC line AD is parallel to line BE AD=BE Prove: DB=EC there are two triangles connected together by point B. They are labled A D B and B E C. D and E are the top points of the triangles. they look like they would be right angle ...

*October 8, 2006 by ann*

**Geometry**

What is the hypothesis of the statement below? If two triangles are isosceles right triangles,then they are similar.

*June 3, 2009 by Sally*

**11th grade**

I'm doing The Ambiguos case of triangles given SSA. My givens are a=6; b=7; alpha=30 degrees. how do I know if there's 2 triangles?

*January 13, 2010 by Natalie*

**geography**

mike has 2 mats that are in the shape of triangles. the scale factor of the 2 triangles maths is 7/4. what is the ratio of the perimeter?

*February 11, 2015 by nulaksha*

**Math**

Two triangles r the same height. The slope side of triangle A is double the slope of B. how do the lengths of these two triangles compare? My last question please help

*January 23, 2014 by Raksha*

**math**

make triangles and find the area of those triangles and then add em together. I need to find the area of a polygon,breaking into simpler parts. how do you do it?

*April 18, 2007 by jamay*

**5th grade math**

what are the 3 names for measuring triangles by side length? what are the 3 names for measuring triangles by the angle size? thank you website reference would be great :)

*October 28, 2009 by Margaret*

**Math**

Bob the builder has many sticks of length 3, 5, and 7. He wants to form triangles whose edges consist of exactly 1 stick. How many non-congruent triangles can he form with the sticks?

*January 2, 2014 by Andrew*

**Math**

The hypotenuse of,c of right triangle ABC is 7.0 m long. A trigonometric ratio for angle A is given for four different triangles. Which one of these triangles has the greatest area? Justify your decision. a)sec A=1.7105 b)cos A=0.7512 c) csc A=2.2703 d)sin A= 0.1515

*November 26, 2010 by Emily*

**Triangles**

solve any triangles satisfying alpha = 20 degrees b = 10 c = 16 b and c are 2 side values and if I use the pythagorean theorem and I get 18.18? Did I do this right?

*November 14, 2012 by Greg*

**Math**

(X+b) (x+c) where b <0 & c<0, the equation turns into x^2+gx+k What is true about g and k G<0 K>0 G<0 K<0 G>0 K>0 G>0 K<0 Two triangles r the same height. The slope side of triangle A is double the slope of B. how do the lengths of these two ...

*January 23, 2014 by Raksha*

**Math**

Two triangles r the same height. The slope side of triangle A is double the slope of B. how do the lengths of these two triangles compare?

*January 23, 2014 by Raksha*

**geometry**

Chris is making a painting with only triangles. He wants each side of the triangles to be the same length. What kind of triangle will he paint?

*April 2, 2013 by Ms.Vargas*

**Math**

Explain why the lengths of the corresponding sides of rectangles ABCD and EFGH vary proportionally. I cant post the picture of the triangles but the length of the first triangle DA=44 and the width AB=88. The second triangles length HE=35 and width EF=70

*November 13, 2013 by Heather*

**help me pls geometry**

Which tirangles must be similar 1. Two right triangles with a congruent acute angle 2. Two obtuse angles 3 Two isosceles triangles with congruent bases 4. Two scalene triangles with a congruent angle

*December 9, 2013 by alexis*

**Geometry CA**

24. Which pair of triangles, if any, can be proven congruent by the ASA Postulate? 25. Which of the following can you use to prove the triangles congruent? If the triangles cannot be proven congruent, select not possible. 26. Which of the following can you use to prove the ...

*May 31, 2011 by Anonymous*

**math**

how can you estimate heights and distances you can't easily measure with rulers or tape measures by using the following methods? A. shadows and simular triangles B.mirrors and simular tiangles c. small tiangles nested within larger triangles

*October 28, 2012 by dorothy morlan*

**math**

Represent the above relationship between the number of triangles and the perimeter of Of the figures they form by filling in the table below. Perimeter = a + b + c Number of Triangles Perimeter 1 6 + 6 + 5 = 17 2 3 .

*May 22, 2013 by shona*

**geomentry**

finding the angles of triangles What triangles?

*March 29, 2007 by jason*

**maths**

Alan is using matchsticks to make isosceles triangles. Isosceles triangles have at least two sides the same length.How many different single isosceles triangles can he make with 45 matchsticks, using all the matchsticks each time? The answer is 11, but I can only work out 7, ...

*November 6, 2013 by LARA*

**math**

The following sequence of figures begins repeating in the fifth figure. The fifth figure has 2 squares, 2 triangles, and 1 rhombus. How many triangles will there be in the 176th figure?

*June 13, 2012 by nick*

**geometry**

a perimeter of 15 cm two or more equal sides and each side a whole number of centimeters. Prove that there are only four of these triangles. You do no need to construct the triangles.

*October 30, 2011 by koko*

**math**

a square has a area of 60sq cm.what%is the area of one of the triangles formed by drawing both of the diagonals of the square of the area of the remaining triangles?

*September 13, 2013 by nicole*

**Math**

The following regular hexagon A ____________B / \ / \ / \ F\ /C \ / E\____________/D has two diagonals going through it, FD and CE. These two lines form 3 triangles. We know that the area of the hexagon is 1. What is the area of those 3 triangles?

*August 26, 2016 by andre*

**math**

a figure is made up of two identical triangles a 15 inch by 12 inch rectangle and a square of side 19 inchs what is the lenght of one side of each triangle if all the sides of the triangles are equal in lenght

*November 7, 2012 by Anonymous*

**math**

the figure is made of two identical triangles a 15 inch by 12 inch rectangle and a square of side 19 inches what is the length of one side of each triangle if all the sides of the triangles are equal in length

*November 7, 2012 by Anonymous*

**Discrete Math (function and similar triangles)**

I need to show that (0,1) and (10, infinity) have the same cardinality. Can I use similar triangles with open intervals? For example, I defined the open interval (10, infinity) to be on the positive x-axis and (0,1) to be on the positive y-axis. Then I said to pick any point ...

*March 4, 2016 by Marie*

**Math**

How many triangles exist when the measure of angle B is 100 degrees, a =10 and b=5? a. none b. 1 triangle c. 2 triangles I have already solved this and I have found that there will be no triangle because by using the law of sines I found that the value is bigger than 1. So, I ...

*December 27, 2015 by David*

**Pre-Calculus**

Determine the number of triangles that can be formed with the given information. and if it forms two possible triangles solve all unknown angles and sides Angle A=116 degrees a=10 b=11

*April 7, 2013 by DW*

**math**

the figure shows eight congruent triangles. redraw the figure with four fewer segaments, so that only four congruent triangles remain.

*March 26, 2009 by donna*

**Math-geometry**

A regular polygon with all sides that are congruent and all angles that are congruent. Thus, the regular triangles are equilateral triangles, and the regular quadrilaterals are squares. All equilateral triangles are similar to one another and all squares are similar to one ...

*February 25, 2013 by Urgent!!*

**Math-geometry**

A regular polygon with all sides that are congruent and all angles that are congruent. Thus, the regular triangles are equilateral triangles, and the regular quadrilaterals are squares. All equilateral triangles are similar to one another and all squares are similar to one ...

*February 26, 2013 by Urgent!!*

**Math-geometry**

A regular polygon with all sides that are congruent and all angles that are congruent. Thus, the regular triangles are equilateral triangles, and the regular quadrilaterals are squares. All equilateral triangles are similar to one another and all squares are similar to one ...

*February 26, 2013 by PLEASE HELP*

**Geometry**

Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG = 1/5 AB. What is the total distance from A to B to C to D to E?? Please I don't understand this

*July 17, 2011 by lisa*

**Geometry**

Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG = 1/5 AB. What is the total distance from A to B to C to D to E?? Please I don't understand this

*July 17, 2011 by Lydia*

**Geometry. Grade 10. Similar triangles**

the ratios of the ares of two similar triangles is 4 : 9. What is the ratio of their altitudes drawn from corresponding sides?

*December 9, 2009 by John. F*

**Geometry**

The scale factor of two similar triangles is 2/5. if the perimeter of the small triangles is 80 cm, what is the perimeter of the large triangle?

*April 2, 2011 by Amanda*

**geometry**

Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG =1/5 AB. FInd the total distance from A to B to C to D to E

*July 14, 2011 by lisa*

**Geometry**

Triangles ABF and EDG are congruent. Triangles ABF and GCF are equilateral. AG = 24 and CG =1/5 AB. FInd the total distance from A to B to C to D to E

*July 14, 2011 by lisa*

**geometry**

triangles ABF and EDG are congruent. triangles ABF and GCF are equalateral. AG = 24 and CG = 1/5 AB. find the total distance from A to B to C to D to E

*July 15, 2011 by jordan*

**math**

Monique is using similar triangles in her graphic-design project. The triangles are isosceles. One has a base of 5 inches and legs of 7.5 inches. If the other triangle has a base of 14 inches, how long are the legs?

*December 9, 2010 by nicole*

**Math (please check my answer!!)**

What other information is needed to prove that the two triangles congruent by SAS? Picture description: there are two triangles showing line LT = line MQ and L=M A. <T = <Q B. <G = <N C. Line GT = line NQ << D. Line LG = line MN

*November 22, 2016 by Sara*

**Math**

The bases of trapezoid ABCD are AB and CD. Let P be the intersection of diagonals AC and BD. If the areas of triangles ABP and CDP are 8 and 18, respectively, then find the area of trapezoid ABCD. I'm so confused... please help! I was thinking that if I found the bases and ...

*November 29, 2015 by Geometry HELP*

**Geometry**

Determine whether each statement is always sometimes or never true. If the answer is sometimes or never draw a counterexample. Two congruent triangels are similar : Two squares are similar : Two isosceles triangles are similar : Two obtuse triangles are similar : Two ...

*January 11, 2016 by Anonymous*

**math**

A tangram is a geometric puzzle made from seven pieces that form a square. Trace the pieces, cut them out, and answer the following questions. The puzzle can also be seen on wikipedia web site. a. If the area of the entire square equals 1 unit, label each piece with its ...

*October 28, 2010 by m*

**geometry**

A regular hexagon is composed of 12 congruent 30-60-90 triangles. If the length of the hypotenuse of one of those triangles is 18 square root 3, find the perimeter of the hexagon.

*December 7, 2011 by damon*

**math**

The ladders shown below are standing against the wall at the same angle. How high up the wall does the longer ladder go? (All measurements are in feet.) ladders 11.25 ft 12.5 ft 14 ft 14 ft 2. The pair of polygons is similar. Find the value of x. polygons 187.5 in. 12 in. 30 ...

*December 3, 2012 by Steve Plzzz Help now !!*

**geometry**

a regular hexagon is composed of 12 congruent 30,60,90 degree triangles. if the length of the hypotenuse of one of those triangles is 18 square root 3 find the perimeter of the hexagon

*December 13, 2011 by damon*

**Geometry**

Two Right Triangles have equal acute angles, yet one triangle is larger than the other. Therefore, the triangles much be _________________. I've looked everywhere in my books and on the internet and I cant find it.

*May 2, 2008 by Kaite Lynn*

**Math**

On a test I was given 2 triangles. One triangle gave measurements of all three sides as 2, 4, and 5. The next triangle had sides given 4 and 8 and it asked what the third side should be if the triangles were perpendicular. How would I solve this? Do I find the perimeter of ...

*January 13, 2017 by Sheila*

**math**

Which of the following statements is true? A. all trapezoids are similar B.all isosceles triangles are the same C.all rectangles are similar D.all equilateral triangles are similar

*December 6, 2012 by alfonso*

**Math**

I am to find the area of a square. It is cut in half and the line is measured at 6 square root 2. It also says that the two triangles are equallateral triangles. I know that the equation for a equalateral triangle is A = the square root of 3 times s squared / 4 How would I ...

*December 15, 2009 by Punkie*

**Geometry**

A coin of radius 1 cm is tossed onto a plane surface that has been tesselated by right triangles whose sides are 8 cm, 15 cm, and 17 cm long. What is the probability that the coin lands within one of the triangles?

*April 20, 2010 by Eunice*

**geometry**

f equilateral triangle JKL is cut by three lines as shown above to form four equilateral triangles of equal area, what is the length of a side of one of the smaller triangles?

*March 29, 2012 by Anonymous*

**preclac**

Evaluate tan^2 60 degrees +sin^2 45 degrees without using your calculator. a)5 b)7/3 c)1/2 d)7/2 Please help. Draw the 30-60 and 45-45 triangles. What is the answer? You ought to be able to do these from memory. If you cant, make and use flash cards on these triangles.

*March 10, 2007 by raven31791*

**maths**

Rudransh has a piece of cardboard in shape of a quadrilateral. He cuts it into two triangles such that angles formed at the vertices are bisected. He wants to find out whether the two triangles are congruent or not

*January 10, 2013 by Anonymous*

**math**

Given: segment AC and segment BD bisect each other at E prove: E is the midpoint of segment RS i don't know if you will be able to visualize the picture but just incase someone is i really need help on the proof for this one. Picture: two(supposedly congruent)triangles that ...

*October 23, 2010 by rebekah*

**math**

Given that triangles PQR~STU:triangle #1 sides 8,9,10 triangle #2 3,?,? a) What is the ratio of similitude of PQR~STU triangles? Express answer in fractional form. b) What is the ratio of the perimeter of PQR~STU triangles? Express answer in fractional form.

*July 9, 2015 by Ana*

**Calculus**

Pyramid - A pyramid with a square base and four faces, each in the shape of an isosceles triangle, is made by cutting away four triangles from a square piece of cardboard and bending up the resulting triangles to form the walls of the pyramid. The diagonal of the square before...

*January 19, 2013 by Mary*

**math**

consider the right traingel with sices 3, 4, and 5. the lengths form an arithmetic series. a. what are the other three right triangles in arthimetic series Actually, I think there are an infinite numbr of such triangles. You want to have sides a, b and c such that a < b <...

*December 21, 2006 by Blonde Glamour*

**5th Gr Math**

Mikail used 220 inches of wire to make this figure. The figure is made up of 2 indentical triangles, a 15 inch by 12 inch rectangle & a square of side 19 inches. What is the length of 1 side of each triangle if all the sides of the triangles are equal in length?

*November 12, 2012 by Ryan*

**algebra**

A set of 2 similar triangles was drawn in a design. One of the triangles was ½ of the other. If the measures of the smaller triangle were 5, 7, and 12 cm, the measures of the larger triangle = 10,14 and 20 cm. true or false

*March 24, 2011 by katie*