Questions on Geometry: Triangles answered by real tutors!

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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(69443)

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.
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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?
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Question 483441: 5x+6x+4x+42=
Click here to see answer by jim_thompson5910(35256)

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.
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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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Question 482013: the endpoints if two segments are given. Find each segment length. Tell whether the segments are congruent
AB: A(2,6), B(0,3)
CD: C(-1,0), D(1,3)

Click here to see answer by cleomenius(959)

Question 481978: The lengths of the bases of an isosceles trapezoid are 6 centimeters and 12 centimeters. If the length of each leg is
5 centimeters, what is the area of the trapezoid?
Click here to see answer by cleomenius(959)

Question 481718: I was wondering if you could please assist me with this problem.
The question reads use a coordinate system to locate triangle ABC with vertices having coordinates A (0,0), B (8,0), and C (6,10)- find the midpoints of the sides of the triangles. Thank you for any help in this matter.
Click here to see answer by cleomenius(959)

Question 481478: A triangle has two sides of lengths 7 and 12 what value could the third side be?

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Question 481478: A triangle has two sides of lengths 7 and 12 what value could the third side be?

Click here to see answer by richard1234(7193)

Question 481478: A triangle has two sides of lengths 7 and 12 what value could the third side be?

Click here to see answer by MathTherapy(10549)

Question 483739: The area of a triangle is 18 square ft. The height is 12 ft. how long is the base?
Click here to see answer by cleomenius(959)

Question 483815: if w=64*63*62*61*......*3*2*1, which of the following choices is not a factor of w? a)69, b)68, c)67, d)66
Thank you
Click here to see answer by Edwin McCravy(20054)

Question 483852: in triangle abc in which DE is parallel to BC ,and intersects AB in D and AC in E . If AD=2cm ,BD=3cm and DE=4cm then what is the length of bc?

Click here to see answer by b_gulsum(6)

Question 483855: if one side of a triangle 1s 12 and other is 7 then what is the third side?
Click here to see answer by stanbon(75887)

Question 483871: The perimeter of a triangle ABC is 500m. A=40 degrees and B= 60 degrees. Find the distance AB. Thank You! :)
Click here to see answer by cleomenius(959)

Question 484021: the side of an equilateral triangle is 8 inches shorter than the side of a square. The perimeter of the square is 46 inches more than the perimeter of the triangle. Find the length of a side of the square.
Click here to see answer by cleomenius(959)

Question 483976: Hi - I'm having problems drawing a diagram for the following question. The part I find unclear is "they mark a point A, 120 m along the edge of the waterpark from Brianna's house. I'm wondering if point A is the waterpark. See question. My answer to this question was 196.6 meters, please verify if correct...
Noah and Brianna want to calculate the distance between their houses which are opposite sides of a water park. They mark a point, A, 120 m along the edge of the water park from Brianna�s house. The measure NBA∠ as and �75BAN∠as. Determine the distance between their houses.
Click here to see answer by cleomenius(959)

Question 484066: Which of the following angles can represent the three angles of a triangle ?? A. 43,56,47 B.58,29,68 C.56,72,38 or D. 59, 53,68 ???
Click here to see answer by cleomenius(959)

Question 483951: Ajax is 8 km due west of Oshawa. Uxbridge is 16 km NW of Oshawa. How far is it from Ajax to Uxbridge? Explain whether you have enough information to solve this problem.

my answer was 13.856 km but not confident how I found the angle oshawa to begin with. I used Cos Oshawa = a/h = 8/16, cos-1 0.5=60 degrees.
Please confirm if done correctly...many thanks.

Click here to see answer by ankor@dixie-net.com(22740)

Question 483934: Hi - I'm finding this question a bit tricky and think I answered it wrong, can someone please verify for me? Many thanks....
In Δ EFG, find the value of f, if e = 7.3 cm, g = 8.7 cm and ∠E = 73�.
my answer was 4.73 cm but I'm not confident that I correctly found angle
Click here to see answer by cleomenius(959)

Question 484147: Find the angles of an isosceles triangle whose third angle is ten degrees less than three times the base angles.
Click here to see answer by chessace(471)

Question 484248: a triangle made from rope.side of triangle is 3,4,5cm.what is the area of square made by same rope?
Click here to see answer by gabriel24(6)

Question 484248: a triangle made from rope.side of triangle is 3,4,5cm.what is the area of square made by same rope?
Click here to see answer by mananth(16946)

Question 484313: the perimeter of an isosceles triangle is 49m. if the base is twice the side, what is the length of the side?
Click here to see answer by stanbon(75887)

Question 484341: IN TRIANGLE XYZ XY=7 YZ=10 AND XZ=4 WHICH ANGLE OF THE TRIANGLE HAS THE GREATEST MEASUREMENT
Click here to see answer by stanbon(75887)

Question 484341: IN TRIANGLE XYZ XY=7 YZ=10 AND XZ=4 WHICH ANGLE OF THE TRIANGLE HAS THE GREATEST MEASUREMENT
Click here to see answer by Edwin McCravy(20054)

Question 484345: Please help me: the triangles hypotenuse is r and the other short sides are x and y. solve for the third side of the triangle if x= 2 sqrt ( 5 ) and r= sqrt ( 38 ). Thanks!
Click here to see answer by stanbon(75887)

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