strausi6 Works

Henry Perigal's Dynamic Proof of Pythagoras' Theorem

2014-07-15 19:57

Dynamic Proof of Euler's Formula for Polyhedra

2014-07-15 20:00

Trapezoid Area and Midsegment – Dynamic Proof of the Formula

2012-10-26 18:21

Dynamic Proof of the Area of a Trapezoid as a Union of Triangles

2012-10-26 18:24