English Dictionary

diagonal

/daɪˈæɡənəl/

noun

(geometry) A line joining non-adjacent vertices of a polygon. / (geometry) A line or plane at an oblique angle to another. / (fashion) A line or cut across a fabric at an oblique angle to its sides.

The diagonal of a square divides it into two congruent right triangles.

意味（1）

(geometry) A line joining non-adjacent vertices of a polygon.

意味（2）

(geometry) A line or plane at an oblique angle to another.

意味（3）

(fashion) A line or cut across a fabric at an oblique angle to its sides.

意味（4）

(typography, uncommon) Synonym of slash ⟨/⟩.

Initial inquiries among professional typists uncover names like slant, slant line, slash, and slash mark. Examination of typing instruction manuals discloses additional names such as diagonal and diagonal mark, and other sources provide the designation oblique.