monogon (suomeksi)

Määritelmät:

(lb, en, geometry) A one-dimensional object comprising one vertex and one (not necessarily straight) edge both of whose ends are that vertex.
(lb, en, geometry) A two-dimensional object comprising one vertex, one edge both of whose ends are that vertex, and one face filling in the hollow formed by that edge.
(lb, en, optics) A single-faceted reflector.