対角(たいかく)

A geometry term referring to opposite corners or angles of a shape.

Forms

対(たい) (opposite/facing) + 角(かく) (angle/corner)

Compounds

• 対角線(たいかくせん): diagonal line (connecting opposite corners)
• 対角(たいかく)にある: located diagonally opposite

Related words

• 対辺(たいへん): opposite side
• 隣角(りんかく): adjacent angle

Usage

Primarily used in mathematics education and technical contexts. Also used outside geometry to describe something located diagonally across — for example, 交差点(こうさてん)の対角(たいかく) (diagonally across the intersection).