Math without words 
Instructions
- Move the points indicated in the following picture to change the shape and size of the right triangle.
- Move, from left to right, the points corresponding to each proof step.
- Observe the changes in the diagram
and draw conclusions.
Remark: After dragging a point from a slider, you may find yourself not able to deselect it. If such a situation occurs (which should be sporadic), just double click on the selected point.
