They are called regular polygons
The names of polygons with 40 sides - Tetracontagon.
a stick
regular
regular polygons are the ones that all sides are equal
All triangles are polygons, so you just call them triangles.
They are called irregular polygons
regular polygons
They are called regular 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
a double triangle