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!
Note:
- c is the longest side of the triangle
- a and b are the other two sides
Definition
The longest side of the triangle is called the "hypotenuse", so the formal definition:
In a right angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other 2 sides.
This video also explains the formula:
(a+b)²= a² + 2ab + b²
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