What is a polygon and what is a non example of a one

The video tutorial explains what a polygon is, highlighting its characteristics as a closed figure with straight sides that are coplanar. It provides examples and non-examples to clarify the concept, emphasizing that polygons must have straight sides and be closed. The tutorial concludes with a summary of these key points.

What makes a figure not a Polygon? Provide examples.

Explain the significance of vertices in a Polygon.