Learning and geometry

The shape of a football (truncated icosahedron)

A football is a truncated icosahedron: the 12 degrees missing at every vertex are what make it a sphere

This drawing comes from one YAML file. No shape was moved by hand.

Notes in the source (in Japanese)

Source (YAML)

examples/gallery/192-サッカーボールの形.zumen.yaml

More in this field

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• Figures in maths problems: the marks carry the meaning — equal ticks, right-angle squares, parallel chevrons — and only the given values are written on the figure
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