Geometric Transformations vs Pythagoras Interactive

Use Geometric Transformation to help students visualize basic geometric transformations on a four-Quadrant grid. Draw figures on an XY grid. As shapes are draw the coordinate pairs that describe the vertices are automatically labeled. Once a figure is draw it can be transformed by tapping an icon representing one of the four operations: reflect, dilate, rotate and translate. Suggestions for what to draw are randomly generated so the app presents an unlimited amount of geometric challenges.

Eureka! An interactive illustration of the Pythagorean Theorem. Drag the legs of the right triangle and watch the three squares transform in real time. Every side shows its length, every square its area — in radical form when needed, so you'll see 2√2 rather than 2.828. Slide through a visual demonstration of Euclid's original proof from Book I of the Elements. Understand why the theorem is always true, not just what it claims.