From the National Film Board of Canada and director René Jodoin, who was invited to join NFB by film legend Norman McLaren, this is Notes on a Triangle (1966), a ballet of three hundred geometric transformations, animated into divisions, alignments, and patterns. Waltz music by Maurice Blackburn.

Per Enriching Mathematics, “Imagine replacing the triangle with a kite, or a rhombus, or an arrowhead, or…”

Next, watch The Dot & the Line: A Romance in Lower Mathematics (1965).

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