Years ago, a man named Pythagoras found an amazing fact about triangles:
If the triangle had a right angle (90°) and you made a square on each of the three sides, then the biggest square had the exact same area as the other two squares put together!
It is called "Pythagoras' Theorem" and can be written in one short equation:
a2 + b2 = c2
Why Is This Useful?
If we know the lengths of two sides of a right angled triangle, we can find the length of the third side. (But it only works on right angled triangles.)
How Do I Use it?
Write it down as an equation:
Now you can use algebra to find any missing value.
Discovered by Khorshed
