Converse of Pythagoras Theorem

Lew W. S.
Test your self the converse of Pythagoras Theorem. Do you know how to identify right angled triangles ? Before you answer, you can use the Hint on Check by Calculation, or use the sliders to construct the triangle and check if it is right angled. (If this applet does not work on Geogebra Tube, it should work using Geogebra 3.2 and above on your PC, so you can download it for self practice.)