is a wrap - why not spindle my images?
Thanks to for organizing the event and all the fun/challenging prompts. Hats off to all who created interesting math art!

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Mathober day 25: cell. Rotating 120-cell with cells moved apart a bit. Russell Towle made a still image in this style a long time ago. I like it a lot. I'm mimicking it in this animation. See my reply for Towle's original picture.

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day 26 - Cell - “Truncated Octahedral Froth” by

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Day 15 Packing. I'd assigned some square penny packing as a writing option for alg learners. (We had done the activity) They all did square grid packing, which got me wondering when that is not most efficient. How close would it be to quadratic? 3", 3.5", 4"

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Day 21 - Limaçon

Pascal's limaçon is not a slug,
but a particular case of roulette curve.
Dürer called it the spider curve…

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