Question

what is polygon?what kind of mouth polygon have?​

Answer 1

Answer 1 :

A flat shape with at least three, and usually five or more, angles and straight sides .

Answer 2 :

Analogously to the two ears theorem, every non-convex simple polygon has at least one mouth. Polygons with the minimum number of principal vertices of both types, two ears and a mouth, are called anthropomorphic polygons.