vertical angle

== English == === Noun === vertical angle (plural vertical angles) (geometry) Any of the opposite angles formed by intersecting lines (and hence, meeting at their vertices). (geometry) The angle at the apex of an isosceles triangle or cone. ==== Synonyms ==== opposite angle (“opposite angles formed by intersecting lines”) vertex angle (“angle at the apex of an isosceles triangle”) aperture (“angle at the apex of a cone”) ==== Translations ====