User:Geberle4/Books/desktop


 * Mathematical proof
 * Direct proof
 * Proof without words
 * 1/4 + 1/16 + 1/64 + 1/256 + ⋯
 * Desargues' theorem
 * Pizza theorem
 * Pythagorean theorem
 * Triangular number
 * Visual calculus
 * Golden ratio