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July 31, 2014

Search: Math (triangles)

Number of results: 90,559

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
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

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

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 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

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

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

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
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
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 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
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

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

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

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

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

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

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

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

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

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

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
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

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

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

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 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

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

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

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
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. 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
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 dont 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 dont understand this
July 17, 2011 by Lydia

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
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 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
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

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
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

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

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
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

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

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

Grade 6 math
Draw an equilaterla triangle. Divide each side in half and join the points to make four small equilateral triangles. Rearrange these four equilateral triangles into a parallelogram. Compare the perimeter of the original triangle with the perimeter of the parallelogram. Explain...
March 2, 2009 by vana

Math(trigonometry)
Data: = 32 degrees, side a = 2.5 feet and side b = 4 feet 1. Identify the swinging side and the fixed side in a possible triangle. 2. Compute the length of the shortest swinging side that will construct a triangle containing the data. (compute the length of h) 3. How many ...
April 13, 2008 by dena

MATH!
To get from his high school to his home, Jamal travels 5.0 miles east and then 4.0 miles north. When Shelia goes to her home from the same high school she travels 8.0 miles east and 2.0 miles south. What is the measure of the shortest distance, to the nearest tenth of a mile, ...
May 6, 2007 by megan

algebra
A set of 2 similar triangles was drawn in a design. One of the triangles was 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

Math (Geometry)
Hello everybody, I have been presented with a geometry task. Here is the exact description of the task. "You work for a construction company. One of the clients wants the company to build a 16 food by 20 dance floor. They want the floor to be a moaic pattern made up of ...
December 3, 2006 by James

Triangles/Math
All of these are triangles Find the areas of the triangles 1. 8 is base and 5 is height A=bxh divided by 2 8x5=40 divided by 2=20 2. 6 is base and 7 is height A=bxh divided by 2 7x6=42 divided by 2=21 3. 12 is base and 5 is height A=bxh divided by 2 12x5=60 divided by 2=30 4. ...
January 18, 2012 by Connor

5th grade Maths
With help of the 10 equilateral triangles of side 3 cm, 8 rectangles of 4*2 cm and 4 square of 3*3 cm make 3 structures using all the figures. find the perimeter of all the triangles, squares, and rectangles??
November 19, 2010 by Jay

math
Frank said that all equilateral triangles are similar. Veronica said that all right triangles are similar. who is correct- frank, veronica, both, or neither? explain your answer.
April 9, 2008 by christinaa

Geometry
The diagonals of an isosceles trapezoid divided it into one pair of congruent triangles and one pair of similar triangles.
July 25, 2012 by Sara

To: Reiny
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

Math
A pentagon is formed by putting together three identical equilateral triangles and one larger equilateral triangle with length of edge equal to 2 times that of the smaller equilateral triangle. If the perimeter of the smaller triangle is 42 cm, what is the perimeter of the ...
April 13, 2007 by Cindy

grade six math
Draw an equilateral triangle. Divide each side in half and join the points to make four small equilateral triangles. Rearrange these four equilateral triangles into a parallelogram. Compare the perimeter of the original triangle with the perimeter of the parallelogram. Explain...
December 18, 2011 by marie

geometry triangles
The sides of a triangle are 8,15 and 18 the shortest side of a similar triangle is 10 how long are the other sides? Find the scale factor of similar triangles whose sides are 4,12,20 and 5,15,25 Assume that traingle xyz is similar to triangle rpn with x(ray sign) r and p(ray ...
November 16, 2013 by BARBIE LEE

Geometry Are these two triangles similar? Thanks!
Are these two triangles similar? How do you know? There are two triangles HMG and JMK They are connected at the top point at M H is on the bottom left, G is on the bottom right, and M is at the top for triangle HMG For triangle JMK J is on the bottom right and K is on the ...
February 20, 2012 by Megan

geometry
the transamerica pyramid building shown in the photograph has four faces shaped like isosceles triangles. The measure of a base angle of one of these triangles is about 85. What is the approximate measure of the vertex angle of the triangle?
January 17, 2012 by alex

arithmetic
Laura sees 5 triangles she knows each triangle has 3 corners help laura sjip count to find how many corners are on 5 triangles
February 15, 2012 by GiGi

maths-urgent
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 without actually super positioning them on one another.
January 10, 2013 by Anonymous

math
Algebra For questions 1-5, find the value of the variable. 1. x = (1 point) 2. y = (1 point) 3. x = (1 point) 4. x = (1 point) 5. (1 point) x = , y = , b = 90 x = , y = 3, b = 95 x = , y = 2, b = 90 x = , y = , b = 130 In Exercises 6-8, decide whether the statement is true or ...
May 20, 2010 by Sasha Z.

math help!
bernardo folds the 2 top corners of a rectanglular piece of paper to form 2 conguent triangles and an isosceles trapezoid. The triangles each have an angle that measures 65. what are the measures of the 2 top angles in the trapezoid? a. 25 and 25 because 65 + 25=90 b. 115 and ...
December 7, 2010 by DeNawQisha

geometry
There are two noncongruent triangles that have a 9-inch side, a 10-inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.
April 13, 2010 by sarah B

geometry
There are two noncongruent triangles that have a 9-inch side, a 10-inch side, and that enclose 36 square inches of area. Find the length of the third side in each of these triangles.
April 15, 2010 by sarah b

Precalc/Triangles
Draw and solve any triangles satisfying alpha = 29 degrees a = 7 c = 14 I realize I need to draw a non-right triangle and label the sides but I am completely confused one what to do after I draw the triangle
November 13, 2012 by Greg

Math : Geometry : Similar triangles
two right triangles are similar. the of the larger triangle is 4 times as long as the base of the smaller triangle. the height of the longer triangle is 16cm. the area of the smaller triangle is 6cm^2. What is the area of the long triangle?
December 9, 2009 by Louise.T

Math
Two triangles are similar, and the ratio of each pair of corresponding sides is 2 : 1. Which statement regarding the two triangles is not true? 1) Their areas have a ratio of 4 : 1. 2) Their altitudes have a ratio of 2 : 1. 3) Their perimeters have a ratio of 2 : 1. 4) Their ...
April 27, 2010 by Hannah

maths
a right angled triangle has legs a,b (a is greater than b).the right angle is bisected splitting the original triangle into 2 smaller triangles.Find the dist btw. the orthocentres of the smaller triangles.
December 31, 2012 by Anonymous

math
darla designed a stained glass window that incorporates 20 squares, triangles, and circles altoghether. the window has 2 more triangles than twice the number of squares. the number of circles in the window is a multiple of three. how many of each shape appears in darla's ...
March 29, 2010 by bessie

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