Varignon's Theorem

Move points A, B, C, or D to begin.
Varignon's Theorem
1) What are points E, F, G, and H?[br]2) What do the colors (red, blue . . . ) signify?[br]3) What is the yellow point tracing?[br]4) Why are the first two marked segments parallel?[br]5) Why are all three marked segments parallel?[br]6) What other relationships are there?[br]7) How small is the interior shape compared to quadrilateral ABCD?[br]8) What transformation maps a triangle like EBF or FCG from its starting position to its ending position?

Information: Varignon's Theorem