A concave polygon.
A convex polygon
It should be convex
Not too sure of the question but the only polygon that has no diagonals is a triangle.
A diagonal is a straight line connecting two non-consecutive points in a four or more sided polygon without overlapping any of the sides.
A diagonal from a polygon is a line segment that joins two nonconsecutive points.
A polygon is convex if you can take any two points inside the polygon and connect them with a line segment that is completely contained by the polygon. A non-convex polygon is one which contains at least two points such that the line joining them does not lie entirely inside the polygon.
Yes, but not a polygon (or polyhedron).Consider a quadrilateral with one diagonal. The end points of the diagonal are at odd vertices while the other two are even.
it becomes a Star polygon
The vertices are the "points" of a polygon.
no because a polygon can not have curved edges,points,sides,ect.