Questions on Geometry: Triangles answered by real tutors!

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Question 1114865: Quick Check in Special Right Triangles:
5. An equilateral triangle has an altitude of 15 m. What is the perimeter of that triangle?
A) 30 square root 2 m
B) 45 m
C) 30 square root 3 m
D) 60 square root 3 m
Click here to see answer by josgarithmetic(39613)

Question 1115040: The length of two sides of a triangle are 15 inches each. The third side measures 10 inches. What
type of triangle is this. Explain your answer using geometric terms.
Click here to see answer by rothauserc(4718)

Question 1115034: A piece of steel is in the shape of a triangle. One side is 6 inches long. The lengths of the two other sides are equal and each is less than 6 inches long. The lengths of the unknown sides of the triangle are whole numbers of inches. What are all the possible lengths, in inches, of the unknown sides of the triangle? Explain the process you used to find all the possible lengths.

Click here to see answer by math_helper(2461)

Question 1115238: Solve triangle ABC if a= 5ft, b=6ft and A=35 degrees
Click here to see answer by Alan3354(69443)

Question 1115236: Solve triangle ABC if A= 24.7, C=106.1 degrees and b=34.0
Click here to see answer by Alan3354(69443)

Question 1115235: What is the area of triangle ABC if a=5ft, b=6ft, and c=7ft

Click here to see answer by Alan3354(69443)

Question 1115409: find the area of an equilateral triangle with a perimeter of 54 cm.

can you help me please?
Click here to see answer by math_helper(2461)

Question 1115581: One side of a triangle has a length of 9 and the other two sides are equal. If the side lengths are all integers, what is the length of the shortest possible side?
Click here to see answer by math_helper(2461)

Question 1115631: Hi tutors! I tried doing these two problems many times but i just don't seem to get it, can someone help me https://docs.google.com/document/d/1TnFJJDFV0zDMBSK47MO4jjwgrl5croVtCxCRwl12D3I/edit?usp=sharing
This leads to the questions
Click here to see answer by MathLover1(20849)

Question 1115734: A student drew a triangle with a side length of 14 units and angle measures of 82� and 68�. The triangle is shown here with a missing angle.

Click here to see answer by ikleyn(52747)

Question 1115751: Hi, i still have a question that Im not sure how to set up this is the link to the question
https://docs.google.com/document/d/1TnFJJDFV0zDMBSK47MO4jjwgrl5croVtCxCRwl12D3I/edit?usp=sharing
i appreciate it!! thanks
Click here to see answer by josgarithmetic(39613)

Question 1116028: In the ΔABC, AB = 16 in, BC = 9 in, AC = 10 in. AD ⊥ to the extended BC. Find CD.
Click here to see answer by greenestamps(13195)

Question 1116027: In ΔABC, m∠A = 90� and AN is an altitude. If AB = 20 in and AC = 15 in, find BC, BN, NC, AN.
I know that BC = 25 because of the 3,4,5 triple but that's all I can figure out.
Click here to see answer by josgarithmetic(39613)

Question 1116100: Solve the triangle a=4 b=3 c=6
Click here to see answer by stanbon(75887)

Question 1116120: Solve the triangle a=3 a=40 degrees b=2
Click here to see answer by stanbon(75887)

Question 1116099: Solve the triangle a=3 a=40 degrees b=2
Click here to see answer by Alan3354(69443)

Question 1116262: What is the perimeter and area of this triangle?
Triangle: https://i.imgur.com/Efj6Pop.png

Click here to see answer by Boreal(15235)

Question 1116264: What is the perimeter of this parallelogram?
Parallelogram: https://i.imgur.com/BVgruYS.png
Area = 288.
Height = 16.
Base = 18.

Click here to see answer by josgarithmetic(39613)

Question 1116328: If A=1,3,4,7 and B=1,3,7,9
find:
A intersection B
Click here to see answer by Alan3354(69443)

Question 1116476: A triangle has sides 3cm, 5cm and 7 cm. The longest side of a similar triangle is 12 cm. Find the length of the shortest side.
Click here to see answer by Shin123(626)

Question 1116476: A triangle has sides 3cm, 5cm and 7 cm. The longest side of a similar triangle is 12 cm. Find the length of the shortest side.
Click here to see answer by ikleyn(52747)

Question 1116476: A triangle has sides 3cm, 5cm and 7 cm. The longest side of a similar triangle is 12 cm. Find the length of the shortest side.
Click here to see answer by MathTherapy(10549)

Question 1114341: The ratio of the measures of three sides of a triangle is 1/4:1/3:1/6. its perimeter is 31.5 inches.
Click here to see answer by Shin123(626)

Question 1114341: The ratio of the measures of three sides of a triangle is 1/4:1/3:1/6. its perimeter is 31.5 inches.
Click here to see answer by josgarithmetic(39613)

Question 1110913: 3y+2x=1 and 2x^2+xy+x-2y-y^2=0
Click here to see answer by Shin123(626)

Question 1116742: Help with angles in circles!
Here's a picture:
https://imgur.com/prybHbW
Here are my questions:
1. If AF = 8, FB = 6, FG = 2, then what is EF?

2. If BC = 12 and GC = 6, what is EG?
3. What is the length of a segment whose endpoints are at (-1,4) and (3,1)?
I think I'm doing the wrong formulas to get my answer. Please help!
Click here to see answer by ikleyn(52747)

Question 1116732: An airplane uses a radio beacon transmitting from an airport to determine how far off course it is from its flight plan to the airport. The pilot takes his first reading and finds that an angle to the beacon o be 25 degrees. Ten miles later the pilot reads the angle to be 49 degrees. How far away is the beacon, and hence the airport, at the time of the seconding reading?
(Please explain it in steps)
Click here to see answer by josgarithmetic(39613)

Question 1116973: What is the area of this composite figure of a rectangle and triangle?
Image of figure: https://i.imgur.com/vq3oIJV.png
Click here to see answer by josgarithmetic(39613)

Question 1117095: The sides of a triangle are 50,60 and 70. Find the length of the angle bisector from the longest side to its opposite vertex.
Answer: 42.25
How to solve?
Click here to see answer by greenestamps(13195)

Question 1117101: What is the surface area of this square pyramid?
Height = 7 cm
Base = 4 cm
I got 74.24 and rounded it to the nearest tenth which would be 74.2. However this isn't the correct answer. Could someone please help? I googled and find some mentions of slanted heights if this might be the case of this equation. Thanks.
Here's an image of the square pyramid for reference in case I missed something: https://i.imgur.com/thZWoNu.png
Click here to see answer by ikleyn(52747)

Question 1117106: If X = 18 yards, Y = 80 yards, and Z = 82 yards, what is the sine of B?
A. 9/40

B. 9/41

C. 40/41

D.41/40

Click here to see answer by Alan3354(69443)

Question 1117342: *I don't know how to add pictures on here, if anyone could help that'd be great!*
So I have a triangle (△PQR) and it's perimeter is 40.
In △PQR, there is an angle bisector (PL).
Given: Perimeter of △PQR = 40; LR = 15; LQ = 9
FIND PQ
The answer is 6.
My problem is I don't know how to get the answer 6. I do know you have to do a proportion but from all the numbers I've tried, haven't been able to get 6.
Click here to see answer by ikleyn(52747)

Question 1117483: Determine if the following sides could construct a triangle. If so, classify them as acute, right, or obtuse.
a.) 76, 120, 39
b.) 252, 104, 85
I know both of these are NOT TRIANGLES, but my work shown doesn't add up to how these numbers are not triangles
Click here to see answer by greenestamps(13195)

Question 1117552: The length of the shortest side of a right triangle is 11 inches. The lengths of the other two sides are represented by consecutive integers. Find an equation to find the lengths of the other sides.
How do we find this equation?
Click here to see answer by ikleyn(52747)

Question 1117624: Hi i need help on identifying these 2 problem's properties this is the link https://docs.google.com/document/d/1wm3DYz9CfSorUik7rAmPmE8KDot4XqPKC6E_Ml6S_OE/edit?usp=sharing
Click here to see answer by solver91311(24713)

Question 1117623: Hi i need help on identifying these 2 problem's properties this is the link thank you! https://docs.google.com/document/d/1wm3DYz9CfSorUik7rAmPmE8KDot4XqPKC6E_Ml6S_OE/edit?usp=sharing
Click here to see answer by solver91311(24713)

Question 1117720: Hi I am very confused on these two problems the link is here https://docs.google.com/document/d/1wm3DYz9CfSorUik7rAmPmE8KDot4XqPKC6E_Ml6S_OE/edit
Click here to see answer by josgarithmetic(39613)

Question 1117752: the base of a certain triangle is 5 cm longer than the altitude, and the area is 42cm squared. FInd the length of the base
Click here to see answer by josgarithmetic(39613)

Question 1117750: the perpendicular sides of a right-angled triangle have lengths in the ratio 3:4. The perimeter of the triangle is 168cm. Find the lengths of the sides.
Click here to see answer by josgarithmetic(39613)

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