interior angle
noun Geometry.
an angle formed between parallel lines by a third line that intersects them.
an angle formed within a polygon by two adjacent sides.
Origin of interior angle
First recorded in 1750–60
Words nearby interior angle
British Dictionary definitions for interior angle
interior angle
noun
an angle of a polygon contained between two adjacent sides
any of the four angles made by a transversal that lie inside the region between the two intersected lines
Scientific definitions for interior angle
interior angle
[ ĭn-tîr′ē-ər ]
Any of the four angles formed inside two straight lines when these lines are intersected by a third straight line.
An angle formed by two adjacent sides of a polygon and included within the polygon. Compare exterior angle.