Questions on Geometry: Triangles answered by real tutors!

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Question 561907: Suppose we want the measure in degrees of the smallest angle in a 5-12-13 right triangle. The units in the figure aren't the right size to make a picture easy to interpret. Figure out a way to use similar triangles in the figure so you can view this angle in a triangle that fits in the figure's viewing area. Give the number of degrees correct to the nearest tenth of a degree.

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Question 562476: what would be the range of a measure for a third side of a triangle with measures 11,11?
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Question 562459: have an equilateral triangle with sides of 13 in. How do I find the area? I know formula is A=1/2bh. Base is 13 but what is height?
Click here to see answer by Edwin McCravy(20054)

Question 562529: explain why you only need to know the measure of two angles of a triangle in order to classify it by its angles
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Question 562536: The altitude of an equilateral triangle is 12 cm.find the perimeter of the triangle
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Question 562537: Find the measuring angle and side measures of triangle abc, given angle a equals 20 degrees, angle c equals 90 degrees, and CB=20
Click here to see answer by issacodegard(60)

Question 563337: I need help dolving an equation?
a=3,c=3, B=64 degrees
Click here to see answer by stanbon(75887)

Question 563460: How do i find the base of a triangle when im given the hieght of 13 and the area of 69?
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Question 563551: The base of an isoceles traingle is 12 cm and its perimeter is 32 cm.find the area.
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Question 563775: Please help me solve these problem.
Ignoring air resistance, the distance d in feet that an object falls in t seconds is given by the formula d=1/2gt^2, where g is approximately 32 ft.per second sq. this formula can also be express as d=16t^2.
a. A plant falls from a window ledge 144 feet high. How long does it takes to hit the street below?
b. A piece of concrete falls from a bridge 400 feet high,how long does it takes to hit the water below?

Click here to see answer by stanbon(75887)

Question 564079: I'm given a right triangle, i know the three side lengths and need to find the degree of the other two angles. How would i find the degree of those two angles using sin, cos, and tan?
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Question 564057: how do you find the height of a triangle when it only gives you the length of one side?
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Question 564093: i know how to use sin, cos, and tan. i know that sin is opp. over hyp., that cos is adj. over hyp., and that tan is opp. over adj. Im given a right triangle and i know all three of the side lengths. How would i use these functions to find the missing angles. I am using a TI-84 calculator and feel like i am getting the wrong answer still. Can you give me an example of how i would use the functions to find the missing angles? Or step by step procedures.
Click here to see answer by richard1234(7193)

Question 564292: a triangle has an area of 28 inches the base is 6 inches less than the twice the height was the answer

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Question 564347: The ratio of the measures of three angles is 4:5:6. Find the measure of each angle of the triangle?
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Question 564346: Given a length of 1, construct a triangle with a perimeter of 3 plus the square root of 5. Explain the steps in your construction.
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Question 564374: Farmer Fred had a square field with sides of 525 feet. He wants to build a fence down one diagnal of the field to separate it into two equal parts. How many feet of fencing will he need to purchase? Show two methods to find the solution.
Click here to see answer by ad_alta(240)

Question 564375: In triangle XYZ, two angles add to be 100 degrees. What is the measure of the third angle?
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Question 564592: if the measure of the acute angles of a right triangle are 2x degrees and 4x degrees, find the measure of the large acute angle
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Question 564658: what is the area of a triangle with a base of 10 centimeters and a height of 15 centimeters
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Question 564633: My daughter has asked my help with her math and it has been a very long time since I have worked this kind of problem (below). Please help me with the proper formula to use in showing her how to work this type of problem. Thank you.
ABC is a 30-60-90 triangle with a right angle at B. Use the measure of the side given to find the measure of the indicated side.
BC= 20, find AB
Click here to see answer by ankor@dixie-net.com(22740)

Question 564940: A triangle has 2 sides that equal 8 inches. The other side equals 4 inches. What kind of triangle is it?
Click here to see answer by issacodegard(60)

Question 564960: using triangle ABC, find the length of the altitude from C to AB. The right triangle has two legs given. the leg BC has the length 7 and the leg AC has the length 24.
I've already tried using the Pythagorean theorem for this problem, it doesn't work. I need an explanation....
Click here to see answer by issacodegard(60)

Question 564994: this set 3 numbers are measurements of a right angle 17, 14, 6. True or false?
Click here to see answer by Alan3354(69443)

Question 565012: A right triangle has the hypotenuse c=12cm and an angle A=30 degrees. Side a, opposite angle A, equals?

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Question 565044: I have a 30-60-90 triangle, I need to find the long and short sides of the triangle; I've been given the medium sides measure which is 8....How do i do this?

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Question 565137: The length of the base of a triangle is three times the height. The area of the triangle is 24 in2. Find the length of the base of the triangle
Click here to see answer by Leaf W.(135)

Question 565034: ABC and DEF are similar. ABC has unknown height (x) and 15' base, while DEF has 6' height and 4' base. Find the unknown height. (show work)
Click here to see answer by KMST(5328)

Question 565152: 30-60-90 triangle has a hypotenuse of 4,find the perimeter
Click here to see answer by ad_alta(240)

Question 565282: What is the measure of the base of a triangle that has side lengths of 3 meters and 2 meters and a perimeter of 9 meters? Please explain.
Click here to see answer by kingme18(98)

Question 565303: A rectangle has a width of 3X+5, the length is twice this. If the perimeter is 228 find the dimensions and area.
W ______, L __________ Area ___________

Click here to see answer by mananth(16946)

Question 565332: A triangle has an area of 135. If the height of the triangle is 30, find the base of the triangle.
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Question 565648: The ratio of similitude in two similar triangles is 5:1. If a side in the larger triangle measures 30 centimeters, find the measure of the corresponding side in the smaller triangle .
Click here to see answer by stanbon(75887)

Question 565637: The base of a triangle is 10x units. The height of the triangle is 1 unit more than a tenth of the base. Given the area of the triangle is 100 square units, what is the length of the base?
Click here to see answer by ad_alta(240)

Question 565830: How do I find the unknown side length of a scalene triangle? I am in 6th grade advanced math, and we hae not learned all of the rules to help us. I have searched various websites, but all have not helped me at all.
Click here to see answer by solver91311(24713)

Question 565788: Can the measures of the sides of a triangle be in the ratio 2 : 3 : 7? Explain why or why not.
Click here to see answer by richard1234(7193)

Question 565846: How to find out the missing side(base) length of a scalene triangle? I am in 6th grade so please explain in a easy way. The other side lenghts are 35cm and 45cm.
Click here to see answer by KMST(5328)

Question 565809: A triangle has 2 sides that equal 5 inches. The other side equals 4 inches.
Click here to see answer by Alan3354(69443)

Question 565900: A triangle has a base of X + 6, the height is X + 8 and the area is 60.
Find X ________, Base ________ Ht _________

Please be specific
Click here to see answer by mananth(16946)

Question 566027: A triangle has side lengths :27 43 65 . Is this a right triangle? Why or why not?
Click here to see answer by htmentor(1343)

Question 566122: in a certain triangle the measure of the second angle is 10 degrees more than three times the first. the third angle measure is equal to the sum of the measures of the other two. find the measures of the three angles.
Click here to see answer by TutorDelphia(193)

Question 566159: Find the area of a triangle with sides measuring 4m, 5m, and 8m?

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Question 566145: is it possible to draw a right triangle with sides measuring 8 inches, 12 inches, and 18 inches? if so what are the calculations?
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