1) Drag points A, B, C and the green dot to change sides of a right triangle ABC.
2) Take square of the hypotenuse and of the remaining sides.
3) Sum the squares of these remaining sides.
4) What do you observe?
5) What relation does the square of the hypotenuse have with sum of the squares of the other two sides.

Repeat the above steps for atleast five diffrent right triangles.
What do you conclude?

C.I.E.T, NCERT, New Delhi, 15 July 2014, Created with GeoGebra