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Pythagorean Theorem Proof II

Pythagorean Theorem Graphical Proof 1. Try adjusting the angle by manipulating the slider. Make the angle less than 90 or more than 90. 2. Try changing the size of the right triangle by dragging the points on the triangle. 3. Watch the graphical proof by clicking on "Step" one at a time.

Does Pythagoras relationship work if you change the size of the right triangle? (Check if a^2+b^2 = c^2 hold as you change the size of the right triangle.)

At the end of step 6, two large squares are formed. How does it prove the Pythagorean Theorem? Explain.