Pythagoras Proofs
Interactions
- Drag the right-angle vertex round the Thales semicircle: the squares grow and shrink, and the pieces are re-cut for the new triangle
- Click a square (or the tray) to run the next proof now
- Click a piece to make it slide back to where it came from, or show where it goes
- Idle: the proofs cycle by themselves, and the triangle changes shape between them; at 3-4-5 a unit grid shows 9 + 16 = 25