Definition of exterior angle in English:

exterior angle

Line breaks: ex|ter¦ior angle

noun

Geometry
  • The angle between a side of a rectilinear figure and an adjacent side extended outward.
    More example sentences
    • Also the Pythagoreans knew the generalisation which states that a polygon with n sides has sum of interior angles 2n - 4 right angles and sum of exterior angles equal to four right angles.
    • In any triangle, if one of the sides be produced, the exterior angle is greater than either of the interior and opposite angles.
    • At each vertex of a triangle there are a couple of angle bisectors: a bisector of the interior angle and a bisector of the exterior angle.

More definitions of exterior angle

Definition of exterior angle in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little