
A right-angled triangle is a triangle in which one of the interior angles is \(90^\circ\). The right angle is the largest angle.
The longest side of the triangle which is the side opposite to \(90{}^\circ \), is called the hypotenuse.
By Pythagoras’s Theorem,
\({{c}^{2}}={{a}^{2}}+{{b}^{2}}\)
Proof of Pythagoras’ Theorem

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