Pythagoras' Theorem

Pythagoras' Theorem shows the relationship between the sides of a right-angled triangle.

"The Sum of the squares of the 2 short sides in a right triangle is equal to the square of the hypotenuse" Verify Pythagoras' Theorem by dragging the pieces from the 2 smaller squares into the square on the hypotenuse. Move the blue dots to change the size of the right triangle, to see that the theorem always works.