The 3-dimensional associahedron in detail.
In the big diagram below, identify the top and bottom line to get a cylinder. Its caps are 2 P:entagons, its content is the C:orolla.
In the diagram you see the other 4 P:entagons and the 3 Q:uadrilaterals.
All partially paranthesized expressions of length 5 appear on this page.
Why would one ever want to draw a polytope?
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