Conversation so far:
what do you call a ten sided shape
In geometry, a decagon is a ten-sided polygon.
are all the sides of a decagon the same length
A regular decagon has all sides of equal length.
are there other types of decagons, besides regular
A truncated pentagon is a quasiregular decagon alternating two types of edges.

Question: any others
Self-contained rewrite: any other types of decagons, besides regular and truncated