First, find a shape that must be there. Then we’ll talk about the ones your eyes invent.
Tap 5 stars that form a convex shape — no dents, every star on the outside.
Find five stars in convex position. (There are more than you’d believe.)
The pentagon was forced. The animals were not — the same random stars can be
anything at all. Why one is unavoidable is a story for later in the course.