An irregular polygon does not have congurent sides and interior angles.
A regular concave has congurent side and interior angles.
In the given figure the sides are congurent to each other and the angles are to
So the figure is the regular polygon.
A convex polygon have all the interior angle must be less than 180 degrees, otherwise the polygon is concave.
In the given figure two the interior angles are greater than 180 degree ,
so the goven polygon is concave.
Answer : c. (regular, concave)
The mark angles are the angles which are greater than 180 degrees