Question

Which polygon is a concave octagon?

Answer 1

this is a concave octagon

Answer 2

Answer:

If any internal angle of octagon is greater than 180° then it's called concave octagon.

Step-by-step explanation:

Hey Mate,

Octagon has 8 Sides. The sum of the all angles of the octagon is 1080°. If in octagon all angles are equal and all sides are equal so, it's called regular octagon, otherwise it's known as irregular  octagon.

If any internal angle of octagon is greater than 180° then it's called concave octagon.