Question
State Pythagoras theorem and its converse.

Answer

Pythagoras theorem: In a right angled triangle, the square of the hypotenuse is equal to the sum of the aquares of the other two sides.
Converse of Pythagoras theorem: In a triangle in the aquare of one side is equal to the sum of the squares of the other two sides, then the angle opposite to the side is a right angle.

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