add infinite number of sides
- Circle (Wikipedia)
A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the centre. The distance between any point of the circle and the centre is called the radius.
- In geometry, an icosagon or 20-gon is a twenty-sided polygon. The sum of any icosagon’s interior angles is 3240 degrees.
- Euclid’s new image of star-forming region Messier 78 ESA497237.jpg (Wikimedia Commons)
