Give the statement of the Pythagoras theorem.
State Pythagoras Theorem:
Pythagorean theorem states that the sum of the squares of the two sides adjacent to the right angle of a right triangle is equal to the square on the hypotenuse (the side opposite the right angle).
Consider is right-angled at .
is the hypotenuse and and are the remaining two sides.
then,
Let and .
Then according to Pythagoras theorem,
Hence, Pythagoras' theorem states that .