Explore the midpoint
On second icon click Midpoint. Then click two points any where on the graph and see the midpoint appear.
Notice what the midpoint is given the two coordinates of the endpoints.
Coxeter- Figure 3.3 A
Puzzle Cube Data
Dynamic Parallelogram by Mr. Cashmore
Bitts math stuff
Optimization - Right Triangle in Semicircle 1
Optimization - Rectangle under Line
CP Geometry Similar Figures And Ratios