Answer :
|\
| \ 2 2 2
a | \ c a + b = c
| \
|____\
b
Some numbers that work in this equation are, 3,4, and 5, and
5, 12, and 13
So if you are told that you have a right triangle whose sides are 3 and 4,
like this:
|\
| \ Then you can use this theorem to find out what the
3 | \ c third side is.
| \ 3*3 + 4*4 = 9 + 16 = 25 = 5*5, so c=5
|____\
4
Let us know if you have any other questions.