Doodles

John A.
Macdonald was known for doodling on various pieces of paper. He doodled, for
example, on a printed sheet showing the resolutions of the Quebec Conference
published in 1866. He also doodled in his math notebook. On the left is one
artistic example from the notebook.

What if
John A had a computer available to him? He could have doodled differently. Here
is a program, written by Chris Yiu and George Gadanidis, that doodles with the sides
of a right angled triangle, a flight of fancy on what John A could
have done with Pythagoras’ Theorem.