Ah, what a delightful question! An 88-sided polygon is called an octacontaoctagon. Isn't that just a lovely name? Just imagine all the happy little shapes you could create with an octacontaoctagon in your artwork.
They are called regular polygons
The names of polygons with 40 sides - Tetracontagon.
a stick
regular
a 10000 sided shape is a myriagon some people call polygons: 10-gon 100-gon 1000-gon and so on
All triangles are polygons, so you just call them triangles.
regular polygons
They are called regular polygons
They are called irregular polygons
Regular Polygons. eg - Square is a regular figure, but a trapezium is not.
congruent
regular polygons
They are called regular polygons
Since any polygon can be constructed from a combination of other polygons, I would call this rule a "trivial property of polygons".
The are similar
equiangular poygon
The names of polygons with 40 sides - Tetracontagon.