Answer:
concave heptagon
Step-by-step explanation:
If a polygon with one or more interior angles greater than 180 degree then it is a concave polygon.
The concave polygon looks like having vertex that went inside the polygon.
Here we have one vertex that goes inside the polygon. So, it is concave
Given polygon has 7 sides. 7 sides polygon is called as heptagon
The polygon is a concave with 7 sides
So it is called as concave heptagon
