- Since any three points make up the corners of a triangle it is unsurprising, if somewhat unimaginative, to find a triangle among the constellations. Aratus and Eratosthenes knew this constellation as Δελτωτόν (Deltoton), because its shape resembled a capital delta (Δ), while Ptolemy in the Almagest listed it as Τρίγωνον (Trigonon), triangle.
- Canon (film) (Wikipedia)
Canon is a 1964 National Film Board of Canada animated short co-directed by Norman McLaren and Grant Munro that offers a visual representation of the canon musical form through three animated segments. The soundtrack combines both a recorded classical score by Eldon Rathburn and electronic sounds produced via synthesizer.