Icosa

Start with the vertices of the regular icosahedron on the unit sphere. Make circles on the sphere consisting of those points whose spherical distance to one of the vertices is no bigger than $\frac{\operatorname{arcsec} \sqrt{5}}{3}$. Stereographically project to the plane and this is the result.

A Mastodon instance for maths people. The kind of people who make $\pi z^2 \times a$ jokes.
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