what is pythagoras theorem please explain

Pythagoras Theorem:

**In a right triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides of the triangle.**

In a right triangle, side opposite to the 90

^{0}is always the hypotenuse.**The square of the side opposite of the 90**^{0}in a right triangle is equal to the sum of squares of the other two sides.∆ ABC is a right triangle, right angled at B. Here, AC is the hypotenuse of the right ∆ ABC.

So, the square of AC is equal to the sum of the squares of the other two sides AB and BC.

I.e., AC

^{2}= AB^{2}+ BC^{2}(Pythagoras Theorem)
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