(mathematics) study of properties in geometry based on arguments and proofs instead of intuition.

(physics) geometrical optics

natural language understanding

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

(geometry, mathematics) Euclidean geometry

(mathematics) geometrical

algebraic geometry

topology (study of geometric properties that are not changed by stretching etc.)

(mathematics) geometric mean, specifically, if the variables a, b, c satisfy the relation a:b=b:c, then b is the 幾何中項 of a and c.

(geometry) construction, especially using tools such as ruler and compass