What are some nine-letter shapes?

13 of the 148 shapes in Icillion have exactly 9 letters, for example Rectangle, Trapezoid and Ellipsoid.

Which nine-letter shapes start with A?

A is the most common first letter here, with 2 names, such as Antiprism and Apeirogon.

Science · lists

These are the nine-letter shapes in Icillion: 13 names, from “Antiprism” to “Trapezoid”.

13 of the 148 shapes have exactly 9 letters (9%).
Most start with A (2), H (2) and T (2).
Only names of one word are counted, and only their letters: spaces, hyphens and apostrophes are not.

What are some nine-letter shapes?: 13 of the 148 shapes in Icillion have exactly 9 letters, for example Rectangle, Trapezoid and Ellipsoid.
Which nine-letter shapes start with A?: A is the most common first letter here, with 2 names, such as Antiprism and Apeirogon.

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