Posted by **Delilah** on Wednesday, October 17, 2012 at 12:47pm.

Explain if a triangle with the given lengths is a right triangle.

1. 18, 24, 30

2. 7, 24, 25

3. 13, 14, 15

I really do not know how to solve these problems! I have no idea how!!!! Please help!

- 7th grade math Pygorean Theroem Ms.Sue please -
**Ms. Sue**, Wednesday, October 17, 2012 at 12:51pm
a^2 + b^2 = c^2

1.

18^2 + 24^2 = C^2

324 + 576 = c^2

900 = c^2

30 = c

The first one is a right triangle.

Do the same thing with the other two problems.

- 7th grade math Pygorean Theroem Ms.Sue please -
**Delilah**, Wednesday, October 17, 2012 at 12:56pm
ok thanks but how do you know if "30"

is a right triangle? I thought 90 was a right triangle?

- 7th grade math Pygorean Theroem Ms.Sue please -
**Ms. Sue**, Wednesday, October 17, 2012 at 1:13pm
Ahh -- 30 is the length of the hypotenuse (longest side).

http://www.mathsisfun.com/pythagoras.html

- 7th grade math Pygorean Theroem Ms.Sue please -
**Delilah**, Wednesday, October 17, 2012 at 1:28pm
thanks

- 7th grade math Pygorean Theroem Ms.Sue please -
**Ms. Sue**, Wednesday, October 17, 2012 at 1:33pm
You're welcome.

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