Hectogon
A hectogon or hectagon is a shape with 100 sides and 100 corners.
Regular hectogon
All sides of a regular hectogon are the same length. Each corner is 176.4°. All corners added together equal 17640°.
Area
The area of a regular hectogon of side length a is given by
- [math]\displaystyle{ A = 25a^2 \cot \frac{\pi}{100} \simeq 795.513 a^2 }[/math]
Hectogon Media
Some polygons of different kinds: open (excluding its boundary), boundary only (excluding interior), closed (including both boundary and interior), and self-intersecting.
Some different types of polygon
Partitioning an n-gon into n − 2 triangles
Coordinates of a non-convex pentagon
Historical image of polygons (1699)
The Giant's Causeway, in Northern Ireland
