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October 21, 2014

Search: isosceles triangle

Number of results: 5,145

geometry
Triangle PEA has a 20-degree angle at P and a 120-degree angle at E, and the length of side EA is 6 inches. Find the lengths of the other two sides of this triangle.
April 12, 2010 by Beatrice

Geometry
I need to bisect two angles of a triangle, measure the triangle I didn't bisect, and then construct a point of intersection of the two angle bisectors. No idea what any of that means. thanks
August 25, 2010 by Lorenzo

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

Orthocenter Question
Triangle ABC has vertices A(0,6), B(4,6) and C(1,3) Find the orthocenter of triangle ABC. Please show your work so that I can understand how to do this type of problem. Thank You I really appreciate your help ^_^
January 3, 2012 by Hilary

honors algebra
the area of a triangle is 105 square feet. the height is two more than four times the base. find the base and height of the triangle
March 6, 2013 by Madison

math
Find the area of the segment of the circle. Leave your answer in terms of pi. there is a circle with a shaded area that has a 90 degree triangle in it and a 3 next to one soide of the triangle
May 4, 2013 by becca

math
The base of a triangle is 11. The other two sides are integers and one of the sides is twice as long as the other. What is the shortest possible length of a side of the triangle?
August 7, 2014 by john

Geometry-PSSA Practice
Which of the following quadrilaterals must have diagonals that bisect each other? Rectangle Parallelogram Rhombus Isosceles Trapezoid
March 13, 2008 by Christina

Right triangle
Determine whether this is a right triangle vertices: G(1, -1) H(5, 0) and J(3, 8) Should I use distance formula to find the sides and use Pythagorean theorem to prove it? Or is there another method? Thanks.
February 15, 2008 by Jen

Geometry(Very Urgent!!!)
Triangle NQP is an equilateral triangle with the measure of angle N=5x-2y and the measure of angle P=x+2y. Find the values of x and y. Show all work to receive credit.
November 5, 2008 by Abbey

Quadratic Equations
The height of a triangle is 1 in. more than twice the base. Find the base and the height if the area of the triangle is 52-1/2 sq in. (Please provide steps/explanation to solve this problem.)
March 29, 2009 by purpletree

geometry
Which geometric figure could not be drawn using both perpendicular line segements and parallel line segements? A.a pentagon B. a rectangle C. a trapezoid D. a triangle IS the answer(D) a triangle
February 13, 2010 by Marie

Geometry
A regular hexagon is made from equilateral triangle by cutting along the dotted lines and removing the three smaller triangles. if triangle has a perimeter of 18, what is the perimeter of hexagon?
June 10, 2010 by DJ

math
i am a fifth grader and behind in math can you show me how to work this problem. two angles in a triangle are given. find x if x is the third in the triangle. 100 degree, 56 degree, x
March 31, 2011 by Anonymous

physics
Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
May 23, 2011 by ashley --- HELP PLEASEE!!!

physics
Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
May 23, 2011 by ashley --- HELP PLEASEE!!!

Geometry
Use any tools to construct each of the following, if possible: a. A right triangle with one acute angle measuring 75° and a leg of 5 cm on a side of the 75° angle b. A triangle with angles measuring 30°, 60°, and 90°
August 1, 2011 by Adalgisa

Math
In triangle XYZ, |XY|= 8 cm and |YZ|=6m. The area of triangle XYZ is 12cm^2. The |<PQR|= 30 degrees, 150 degrees. Find the two possible values of |XZ, correct 1 decimal place
October 18, 2012 by Anonymous

Math
In triangle XYZ, |XY|= 8 cm and |YZ|=6m. The area of triangle XYZ is 12cm^2. The |<PQR|= 30 degrees, 150 degrees. Find the two possible values of |XZ, correct 1 decimal place
October 18, 2012 by Nix

physics
Three resistors, each of resistance 6 Ω, are connected in such a way that that they form the three sides of a triangle. What is the equivalent resistance between any two vertices of the triangle?
April 23, 2014 by m

Geometry
In a triangle with integer side lengths, one side is three times as long as a second side, and the length of the third side is 15. What is the greatest possible perimeter of the triangle?
August 15, 2014 by itrixie

Math
The coordinates of the vertices of triangle ABC are A (-5,1), B (-2,3) and C (-4,7). The triangle is reflected over the line x=2. What is the sum of the x-coordinates of points A', B' and C'(the points after the reflection)?
December 19, 2007 by Sam

Geometry
The hypotenuse of a right triangle is the side opposite the? a. 90 degree angle b. smallest angle of the triangle c. acute angle d. top angle I believe it is a
October 2, 2008 by Jen

geometry
A triangle has a 56-degree angle, formed by a 10-inch side and an x-inch side. Given that the area of the triangle is 18 square inches, find x.
April 11, 2010 by yadlay

math
A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice?
October 19, 2010 by Ted

math
A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice
October 20, 2010 by Ted

math
A triangle has vertices P(7,7), Q(-3,-5), and R(5,-3). a. calculate the lengths of the midsegmaents b. calculate the lengths of the three side of triangle PQR. c. compare your answers in a. and b. what do you notice
October 20, 2010 by Ted

calculus
the sides of an equilateral triangle are increasing at a rate of 27 in/sec. how fast is the triangles area increasing when the sides of the triangle are each 18 inches long?
October 25, 2010 by Anonymous

math
suppose a parallelogram has an area of 84 square units. Describe a triangle related to this parallelogram, and find the triangle's area, base, and height.
November 8, 2010 by jasmine

Geometry
A right triangle has an angle that measures 55 degress. The leg adjacent to this angle has a length of 43 cm. What is the length of the triangle? Round to the nearest tenth
February 14, 2011 by Marco

Alegebra 1
If all the vertices of a triangle are on the circle and one side of the triangle is the diameter of the circle it is a right angle. Find the length of the diameter (AC) if Ab =8 and BC = 15.
March 10, 2011 by Chip

Math
A triangle and trapezoid share a 15 inch base and a height of 10 inches. For what values of b is the area of the trapezoid less than twice the area of the triangle?
October 3, 2011 by Jessica

geometry
you have a square wiht an 8-inch side. you want to draw a triangle with a base 3 times greater that a side of the square. what is the altitude of the triangle?
October 12, 2011 by uzziah

Maths
triangle ABC is right angled at A. AD is perpendicularto BC. If AB= 5cm,BC= 13cm and AC=12 cm.find the area of triangle ABC. Also find the length of AD.
December 6, 2011 by leon

geometry
The lengths of three sides of a triangle are given. Describe each triangle as acute. right. or obtuse. square root 5, 3, square root 14.
February 12, 2012 by Rachel

math
A Triangle has sides 4,8,and 11. In a similar triangle the shortest side is 8 and the longest side is x. a) Write a proportion that models the situation. b) Solve the proportion for x.
March 27, 2013 by Felicia

MATH Calculus Homework PLEASE HELP!
Let T be the triangle 1≤x≤2, 0≤y≤3x-3. Find the volume that results by rotating the triangle T around the line x=-1.
May 9, 2013 by Claire

Angles,Lines and Triangles
The sum of two angles of a triangle is 116 degree and their differences is 24 degree.Find the measure of each angle of the triangle.
June 17, 2014 by Harsh

math
A triangle has sides of lengths 48 feet, 55 feet, and 74 feet. Which statement is true concerning this triangle?
March 2, 2011 by Lo

Math
What is the best estimate of the measure of: Right triangle, A,B,C, if there are no degrees. Ans. 15 degrees. How do you get this if there are no degrees on the triangle??
November 30, 2012 by Edna

Math help plz
Identify three different situations where you could apply the Pythagorean Theorem. help.. thank u The Pythagorean Theorem describes a right-triangle. Therefore it can be applied anywhere a triangle exists.
October 29, 2006 by Linsey

Calculus
The measurement of one side of a right triangle is found to be 9.5 inches, and the angle opposite that side is 26°45' with a possible error of 1.5'. Approximate the percent error in computing the area of the triangle.
October 28, 2009 by Calvin

Algebra
The sides of a square are one-third as long as the sides of an equilateral triangle. The difference between their perimeters is 20 centimeters. How long is each side of the triangle? Define your variables. Thx
March 8, 2010 by Renee

algebra
Find n so that the square and triangle have the same perimeter. The square is 8n+6, the triangle is 13n+2 on two of the sides and 30n-28 on the other side. This is the question that I have for homework,I don't understand it. Thanks
September 29, 2010 by art

Math
the right triangle ABC, the altitude from vertex C divides the hypotenuse into two segments, one of length 2 and the other of length 16. Find the perimeter of triangle ABC.
December 7, 2013 by Lily

math
Tom drew a triangle with angle measures of 130°, 24°, and 26°. How would you classify Tom’s triangle based on the measures of the angles?
May 24, 2010 by Anonymous

8th grade
Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 27°,what is the measure of angle Z?
June 23, 2010 by Anonymous

Geometry
Rectangle ABCD has diagonals AC and BD. E is the point of intersection of the two diagonals. If the area of triangle AEB is 8, what is the area of triangle ACD?
November 19, 2010 by Jen

geometry
Indirect proof given triangle ABC,<B is an obtuse angle prove there can only be one obtuse angle in triangle.
December 17, 2010 by Alfa

maths
i have got to find the perimeter of a triangle that has one side of 8x-7w another that says 3x+9y and then another that says 3y+5w whats the perimeter of the triangle ??? please help
January 21, 2011 by sophie

math
A triangle whose sides are 5,12, and 13 inches is similar to a traingle whose longest side is 39 inches. What is the perimeter of the larger triangle?
February 23, 2011 by erika

Algebra II
The height of a right triangle is 7 inches greater than the length of its base. If the area of the triangle is 15 square inches, find the base.
July 1, 2011 by Nicole

geometry
the base of an isoscels triangle is 4x long. the altitude to the base is 3x cm long. Find the length of one other side of the triangle
February 23, 2012 by sara

>_<
The 3 sided triangle has an area of 14 in^2. Determine the lengths of the sides of the triangles.Remember that the area of a triangle is ˝ bh. bottom length= x+3 side length= x
May 20, 2012 by Anonymous

Math
In triangle XYZ, |XY|= 8 cm and |YZ|=6m. The area of triangle XYZ is 12cm^2. The |<PQR|= 30 degrees, 150 degrees. Find the two possible |XZ|
October 18, 2012 by Anonymous

math URGENT!!
the midpoints of the sides of a triangle are (1,1),(4,3),and (3,5). find the area of the triangle. please answer and show how u did it step by step please!!!!
October 25, 2012 by dan

Geometry-8th gr
Can you please help me with this question? 1.) Given: triangle ABC ~ triangle XYZ, m<A= 50 degrees, m<X= (2x +5y) degrees, m>Z=( 55 + y) degrees, and that m<B=(102-x) degrees. Find m<Z. Thanks.
January 31, 2013 by Mona

geometry
Triangle ABC and triangle XYZ are similar. If AB, BC, and AC are 7 inches, 9 inches, and 10 inches respectively, and XY is 9 inches, find XZ to the nearest tenth of an inch.
February 3, 2013 by Anonymous

maths-areas
in triangle ABC P, Q AND R ARE the mid points of side AB, BC, CA.prove that area of parallelogram APQR=( 1/2)* area of triangle[ABC]
March 15, 2013 by anoynomous

algebra 1
write an algebraic expression that could be used to represent the perimeter of the triangle below. write the expression in simplest form. triangle 3x+1 3-x 2x+4 A: 6x+2 B: 5x-8 C: 4x+8 D: 6x-2
March 28, 2013 by Anonymous

math
the height of a triangle is 5 cm more than the length of the base. if the area of a triangle is 133 cm^2 find the hight nad length of the base
March 31, 2013 by luz

math
A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
December 19, 2013 by james

math
A triangle has vertices with coordinates (2, 0), (3, -1), and (-2, -5). If the triangle is dilated by a scale factor of 3 with the origin as the center of dilation, what are the coordinates of the vertices of the image.
December 19, 2013 by james

Math
If a circle is inscribed in a triangle with vertex angles 30o - 60o - 90o , then what is the area of the triangle divided by the area of the circle?
May 9, 2014 by Judy

Trigonometry
Usa a right triangle to write each expression as an algebraic expression. Assume the referenced angle is theta, and x is positive and in the domain of the given inverse trig. function. Label the triangle. 1. sec^sq(tan^-1x) 2. sin(arccot x/(sqrt)1-x^2)
May 12, 2010 by David M.

Math - check my answers :)
1. Find the amplitude, if it exists, and the period of y=tan 1/4Č Answer: No limits in amplitude, y=tanČ/4 period is 4pi 2.Solve x = Arctan(-sqrt3) Work: Pythagorean theorem: sqrt(1^2+3)= sqrt4=2 in length. Triangle is 1, sqrt 3,2 Answer: -60° 3. In triangleABC, A = 35°, a = ...
January 30, 2009 by Grace

Math repost for Jose
Math - jose, Sunday, October 14, 2007 at 12:55pm <EAB and < ABC are right angles,AB=4,BC=6,AE=8,AC and BE interset at D.What is the differens the area of triangle ADE and triangle BDC
October 14, 2007 by Ms. Sue

geometry
The coordinates of point A on triangle ABC are (2, -4). What would be the image of point A after triangle ABC is reflected over the y-axis andthen rotated about the origin 180 degree?
May 5, 2012 by Piggy

Math 2 questions
1.5.652 rounded to the nearest tenth. 2. The two triangles below are similar. Find the value of x. triangle 1: base: 4 height: 10 triangle 2: base: x height: 20 what would X be? my guess 8.
March 10, 2014 by anonymous

geometry
Rewrite the statement in if-then form. All equilateral triangles have three congruent sides. a. a figure has three congruent sides if and only if it is an equilateral triangle. b. a figure is an equilateral triangle if and only if it has three congruent sides. c. if a figure ...
October 2, 2007 by alan

math pls
The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (d) Find the sizes of the other two angles of triangle PQR. (e) Find the length of the median drawn to side PQ. (f) Find the length of the bisector of angle R. (g) ...
April 21, 2010 by Maryann

geometry/math pls help
The lengths of segments PQ and PR are 8 inches and 5 inches, respectively, and they make a 60-degree angle at P. (1) Find the sizes of the other two angles of triangle PQR. (2) Find the length of the median drawn to side PQ. (3) Find the length of the bisector of angle R. (4) ...
April 21, 2010 by Maryann

math
Explain how the triangle similarity postulates and theorems are alike and how they differ from triangle congruence postulates Name something with a height that would be difficult to measure directly. Describe how you could measure it indirectly
January 25, 2008 by help plz

Trigonometry
Hi, this question concerns a right angled triangle. If I know the hypotenuse of the triangle is 16cm and I know the adjacent side to an unknown angle is 14cm which trigonometric ratio would I need to find the unknown angle? Many thanks
July 4, 2010 by Sam

geometry
Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates.
January 30, 2012 by Anonymous

geometry
Plot the points (2,4), (-1,4) and (2,1) and connect them to form a triangle. What rule would you use to translate the triangle 5 units to the right? Write your rule in the form H(x,y) = (?,?). Draw the translated figure and label its coordinates
February 6, 2012 by Anonymous

Yorktwon
Use a straightedge and a compass to construct a triangle with 2 sides having the same length. Describe the process you used. Now use a protractor to measure each angle of the triangle. What are the measures of each angle?
February 17, 2012 by Anonymous

physics
two equal masses of 5kg are placed on two vertex of an an equilateral triangle and 20 kg mass on the third.each side is 20 cm long. find the force acting on 1 kg mass kept at the centroid of the triangle.
July 27, 2012 by abhinaw

Help triangle angles!
Points D, E, and F are the midpoints of sides BC, CA, and AB of ABC, respectively, and CZ is an altitude of the triangle. If <BAC=71, <ABC=39, and <BCA=70, then what is <EZD+<EFD in degrees? Please help I tried making a picture but its not helping....please help!
December 19, 2012 by Knights

Calculus
The measurements of the base and altitude of a triangle are found to be 36 and 50 centimeters, respectively. The possible error in each measurement is 0.25 centimeter. Use differentials to approximate the possible propagated error in computing the area of the triangle.
December 16, 2013 by Lindsay

chemistry
For the reaction H2(g) +S(s)->H2S(s), Triangle H= -20.2 kJ and triangle S= 43.1 J/K. WHen will the reaction be spontaneous? I know that it has to be negative to be spontaneous but i dont exactly know how to answer this question.
April 24, 2008 by trista

algebra
The vertices's of triangle ABC are A(-1,2), b(0,3), and c(3,1). Determine the vertices A', B', and C' of the image of triangle ABC after a reflection across the x-axis.
September 1, 2008 by kareem

geometry
Right triangle ABC is similar to triangle XYZ because angle B is congruent to angle Y. If angle C equals 33°,what is the measure of angle Z?
March 4, 2010 by Jesus

MATH
there is a triangle with a base of 2.4 m and both sides are 1.7 m. it is a right triangle. what the heck is the answer? i have an answer sheet and i know the answer is 41 but how do you get that answer?
March 4, 2010 by j

Math
a side of a square is 10 meters longer than the side of a equalaterial triangle. The perimeter of the square is 3 times the perimter of the triangle
October 25, 2010 by Edden

11th grade
Joe wants to draw a triangle.the lengths are 5cm,12cm,and 13cm. A:will joe be able to draw the triangle?why or why not?
December 13, 2010 by Anonymous

math
area of a triangle is equal of the area of a square of side 60 m. Find the side of the triangle whose corresponding altitude is 90 m.
March 2, 2011 by prabhpreet singh

math
A right triangle has a hypotenuse equal to 25 m and one leg equal to 17 m. What is the approximate value of the second leg of the triangle?
March 2, 2011 by Lo

algebra
Write a function rule for the area of a triangle whose base is 4 ft more than the height. What is the area of the triangle when its height is 6 ft?
March 27, 2011 by thalia

geometry
an equilateral triangle of side 20cm is inscribed in a circle.calculate the distance of a side of the triangle from th centre of the circle.
March 30, 2011 by victor

Math
The sides of a triangle are three consecutive odd integers. The perimeter of the triangle is 39 inches. What is the length of each of the three sides?
January 3, 2013 by ANONYMOUS

geometry
Triangle ABC is similar to triangle DEF. The sides of ABC are 5,8 and 11. What is the length of the shorttest side of DEF if its perimeter is 60?
June 18, 2013 by mily

Math
An equilateral triangle and a regular hexagon have equal perimeters. What is the area of the triangle, if the area of the hexagon is 120? I don't get it
December 13, 2013 by Kizzy

geometry and combinatorics
An equilateral triangle with side length 33 is divided into 33^2 smaller unit equilateral triangles each with side 1, forming a triangular lattice. We color each segment of length 1 either Red, Blue or Green, subject to the condition that each small unit equilateral triangle ...
April 30, 2013 by sanji

math
questions 21-25 match one definition cmparing denominate numbers with different units is it parallel unit price rate isosceles decimal
April 11, 2010 by Anonymous

calculus
find the volume of the solid whose cross section is perpendicular to the x axis from isosceles right triangles and has a leg that run from the lines y=-x to the line y=.5x
April 11, 2011 by Eli

MATHS
Find the lengths of the missing sides in the triangle. Write your answers as integers or as decimals rounded to the nearest tenth. The diagram is not drawn to scale. triangle has sides 7, Y and X and 45 degree angle can someone show me how to do this? im supposed to use trig ...
February 13, 2013 by Corie

geometry
If the perimeter of the smaller triangle is 9 cm, what is the perimeter of the larger triangle?
February 10, 2011 by Anonymous

Math
The perimeter of triangle B is how many times greater than the perimeter of triangle A?
June 12, 2012 by jessica

area of triangle
the base of a triangle is 9 cm the area is 18 cm squared what is the height?
April 9, 2013 by Wyatt

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