Pythagoras' theorem

The Pythagoras' theorem (or Pythagorean theorem) states that:
"In a right-angled triangle, the square of the hypotenuse is equal to the sum of the squares of the other two sides."

So, if aa, bb, and cc are the three sides of a right-angled triangle and cc is the longest side (i.e. hypotenuse), then: a2+b2=c2a^2 + b^2 = c^2

The hypotenuse is the longest side of the right triangle and it always exists opposite to the right angle (90° angle) of the triangle. This happens because the side opposite to the greatest angle is the longest.

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