monogonal

not-comparable of a line

(geometry, of a line) That passes through exactly one vertex (of a polygon or polyhedron).

Japanese Meaning

（幾何学において）多角形または多面体の頂点をちょうど一つ通る直線（または線分）の性質

The monogonal line passed through the polygon, intersecting exactly one vertex and preserving none of the original symmetries.

その直線は多角形のちょうど1つの頂点で交わり、その1点で元の対称性を崩した。

Sense（1）

(geometry, of a line) That passes through exactly one vertex (of a polygon or polyhedron).