A polygon is a two-dimensional geometric shape composed of straight line segments connected end-to-end to form a closed figure. The simplest polygon is a triangle, which has three sides, while polygons can have any number of sides, such as quadrilaterals (four sides) or pentagons (five sides). Polygons can be classified as regular, with equal sides and angles, or irregular, with varying side lengths and angles. Examples include squares, hexagons, and octagons.
A rhombus
Any regular polugon with 5 or more sides. Many irregular polygons with 5 or more sides will also meet the requirements.
The name of a 69-sided polygon would be derived from the prefix for 60 when used in the concept of regular polygons (hexacontakai) and the prefix for 9 (ennea), with the suffix -gon at the end of the word. Therefore a 69-sided polygon would be called a hexacontakaienneagon.