A henagon (or monogon) is a shape in geometry. It is like a polygon, except that it only has one side and one corner (vertex). Henagons are considered to be impossible to draw, using Euclidean geometry. This is because the single side would go to infinity.
Since it only has one side, there is only one angle. Therefore, all henagons are considered regular shapes.
Special cases, including regular polygons with their own names, in parentheses List of polygons by number of sides | ||
1–10 sides | ||
11–20 sides | ||
21–30 sides | ||
31–50 sides | ||
51–100 sides (selected) | ||
>100 sides | ||
Star polygons (5–12 sides) | ||
Triangles | ||
Quadrilaterals |