1080 degrees
it has 5 sides
There are eight interior angles, and 16 exterior angles.
3 Pentagon=5 Octagon=8
An octagon has 8 sides
No.
16 vertices.16 vertices.16 vertices.16 vertices.
A pentacontagon has 50 vertices (not vertices's!).
8 vertices
Eight vertices
it has 30 vertices
11 vertices