Marty Ross

One-Glance(ish) Proofs of Pythagoras' Theorem for 60-Degree and 120-Degree Triangles

Summary In this article we present some elementary proofs of the 60-degree and 120-degree counterparts of Pythagoras′ theorem that mimic the two (most) famous one-glance proofs of Pythagoras′ theorem.

A case of continuous hangover

Abstract We consider a continuous analogue of the classic problem of stacking identical bricks to construct a tower of maximal overhang.

Marching in Squares

Summary We begin with a new take (in the context of precision marching choreography) on a beautiful proof by contradiction. Then we turn around the destructive part of this proof to construct some very pretty near-misses.