Theorem 19, Corollary 3 and Corollary 4
Corollaries 3 and 4 to Theorem 19 are converses of each other. Points A and C may be dragged to see variations in the shape.
Corollary 7.2 & 7.2
Corollaries 7.1 & 7.2
Newton Principia Prop. 16 corollaries
Converses of Theorems on Circle Properties
Congruent Figures: Dynamic Illustration
OmtrekshoekMiddelpuntshoek Bewijs 2-3 Binnenbeens
Object launched from the top of a building 160 ft high
Shumëfishi më i vogël i përbashkët!
The Broken Inch Ruler
A pattern of Cuisenaire Rods, adapted from Duane Habecker's app