monogon; henagon
A one-sided polygon in geometry; a theoretical shape with one vertex and one edge. Rarely encountered outside mathematical contexts.
A monogon is a shape not normally considered in Euclidean geometry.
On a sphere, a monogon can sometimes be defined.
General term for polygon; 一角形 is a specific, degenerate case.
Standard kanji spelling for 'monogon' in geometry.
Compound of 一 (one) + 角 (angle) + 形 (shape). The reading いちかくけい is regular; いっかっけい is a less common euphonic variant.