noun
external angle; exterior angle
Mathematical term for the angle formed outside a polygon when one side is extended. Contrasts with 内角 (internal angle).
See also: 内角
三角形の外角の和は360度です。
The sum of the exterior angles of a triangle is 360 degrees.
noun
outside corner
Baseball term for the part of home plate farthest from the batter, or a pitch thrown to that location. Contrasts with 内角 (inside corner).
See also: 内角
ピッチャーは外角いっぱいにストレートを投げ込んだ。
The pitcher threw a fastball right on the outside corner.