Questions on Geometry: Triangles answered by real tutors!

Tutors Answer Your Questions about Triangles (FREE)

Question 481901: The lengths of two sides of a triangle are 20 cm and 32 cm.
a.) Explain why the third side of the triangle can or cannot have a length of 10 cm.

Click here to see answer by solver91311(16877)

Question 481990: the measure of the vertex angle of an isosceles triangle is 78 degrees .what is the measure of each base angles?
Click here to see answer by jim_thompson5910(28593)

Question 482167: if the lengths of the two sides of a triangle are 4 and 7, then the leghth of the third side is less than_______.
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Question 482241: I DO NOT GET THE ANSWER
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Question 482263: Triangle ABC is isosceles with AB=AC, AB=4x-2, BC=4x-3, AC=2x+12 find BC)
Click here to see answer by Edwin McCravy(8908)

Question 482263: Triangle ABC is isosceles with AB=AC, AB=4x-2, BC=4x-3, AC=2x+12 find BC)
Click here to see answer by stanbon(57307)

Question 482261: triangle abc is isosceles with ab=ac, ab=4x-2, bc=4x-3, ac=2x+12 find bc
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Question 482320: the legs of an isosceles right triangle each measure 10in. what is the length of the hypotenuse of the triangle to the nearest tenth of an inch
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Question 482367: The perimeter of an equilateral triangle with a side of 18 is _____.

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Question 482437: If the altitude of an equilateral triangle is 5cm, what is the length of a side?
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Question 482586: If a + b = 5 and ab = 6 , then find the value of
4(a² - b²) – a³ + b³, if a > b .

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Question 482627: the perimeter of a triangle is 48 inches and the sides are in the ratio of 3:4:5. Find the length of each side.
Click here to see answer by cleomenius(959)

Question 482634: Find the legs for a 20, 70, 90 triangle.

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Question 482636: I have a triangle with sides of 1 and a side of SQRT(2), with an angle of 45° and an angle of 90°. Which of the following would be congruent to it?
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Question 482793: If irregular Polygon irregular Polygon with all corresponding sides having the ratio 3 to 2, which statement is not true?
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Question 482923: A triangle has angles labeled A, B,C. B is twice A. C is three times A. What type of triangle is this?
evigiletti@aol.com
Click here to see answer by richard1234(5390)

Question 483065: In Geometry class, I was given a true or false question:
"In a triangle, if two sides have equal length, the third side must be shorter than either of the other sides."
I wrote in "False," but after reading more on it I am leaning towards writing in "True."
May you help me confirm this please?
Click here to see answer by Alan3354(30993)

Question 483111: How do you find the side lengths of an isosceles triangle if you just have the other 2 side lengths and not the perimeter?
Click here to see answer by cleomenius(959)

Question 483111: How do you find the side lengths of an isosceles triangle if you just have the other 2 side lengths and not the perimeter?
Click here to see answer by Edwin McCravy(8908)

Question 483030: If BC = 6 and AD = 5, find DC.
Click here to see answer by cleomenius(959)

Question 483021: If DE= 4x+5 and GJ= 3x+25 what is DE?
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Question 483130: if a = 4 and b = 3 find c

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Question 483159:
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Question 482968: The area of a triangle is 338 square yards. The height of the triangle is four times its base. Find the height and base of the triangle.
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Question 482986: If a triangle has sides of length (2x - 1) cm, (3x + 2) cm, and (12 - x) cm, find all possible values of x.
Click here to see answer by cleomenius(959)

Question 482643: Each set of numbers below represents the lengths of three line segments.
Which set represent line segments that could be connected to form a triangle:
A (1, 2, 3)
B (3, 4, 5)
C (1, 10, 100)
D (1, 2, 5)
E (1, 3, 4)
F (1, 20, 100)
Click here to see answer by cleomenius(959)

Question 482642: Each set of numbers below represents the lengths of three line segments.
Which set represent line segments that could be connected to form a triangle?
A (3, 1, 2)
B (3, 2, 5)
C (1, 15, 100)
D (40, 5, 40)
E (30, 4, 10)
F (20, 30, 50)
Click here to see answer by cleomenius(959)

Question 482794: The sides of a triangle are in the ratio 5:12:13. What is the length of each side of the triangle if the perimeter of the triangle is 15 inches?
Thank you if you can help!
Click here to see answer by cleomenius(959)

Question 482640: I know the base, but I need to find the height. I know the top of triangle ABC is directly above a point 4.5 units from point A. I also know that
Click here to see answer by cleomenius(959)

Question 482638: The sun is shining and I am on a hill. I want to measure the height of a tree downhill from me, using my one-meter stick, and a tape measure for measuring shadows. What do I do to take the slope of the hill into account?
Click here to see answer by cleomenius(959)

Question 482569: If vertices of triangle are A(x, 4); B(2, - 6) and C(5, 4); find x. Area of triangle is 35 sq cm.
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Question 482170: sides AB and BC and median AD of a triangle ABC are respectively proportional to sides PQ and QR and median PM of triangle PQR.show that triangle abc similar triangle pqr
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Question 483328: why cant the third side of the triangle cannot have a length of 10cm if the other two sides have a length of 20cm and 32cm?
Click here to see answer by Alan3354(30993)

Question 483328: why cant the third side of the triangle cannot have a length of 10cm if the other two sides have a length of 20cm and 32cm?
Click here to see answer by cleomenius(959)

Question 483224: Given: Triangle BAD is congruent to Triangle CAD
AD is perpendicular to BC

Prove: Triangle ABC is isosceles
I'm not sure I'm doing this correctly, can you please show me what you come up with and your reasoning for it?
Thank you
Click here to see answer by cleomenius(959)

Question 482357: how do you find an unknown length of a triangle when given the height and base?
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Question 482589: for a triangle when c = 60 degree prove 1/b+c + 1/a+c = 3/a+b+c
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Question 482132: ACF & DBC are two right triangles. the ans is 10 but i'm not getting how it can be the ans. Can anyone explain it please?
Thanks.
Click here to see answer by cleomenius(959)

Question 482570: vertical angle of an isosceles triangle is25degress 17minutes.express the base angle in circular measure

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Question 482150: If two non parallel lines are perpendicular to two other straight lines ,each to each.Show that the acute angle between first pair of line is equal to acute angle of second pair of line.
Click here to see answer by cleomenius(959)

Question 482087: the smallest angle of an isosceles triangle is one-fifth of one of the equal angles. the shortest side is 20m. what is the perimeter of the triangle?
Click here to see answer by cleomenius(959)

Question 483441: 5x+6x+4x+42=
Click here to see answer by jim_thompson5910(28593)

Question 483624: If triangle QRS is an equilateral triangle,what is the value of a+b? When a equals to 20? Cn u plz answer this question as soon as possible? Thank you.
Click here to see answer by cleomenius(959)

Question 483367: Find AC
ABC is a right triangle; right angle at B. Medians AD and CE are of lengths 5 cm
and 2 5 cm respectively.
Click here to see answer by cleomenius(959)

Question 482077: the area of an isosceles triangle is 36m aquared. the equal side is 30 degrees. determine the sum of the sides of the triangle.
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