corresponding angles

plural noun

, Geometry.

1. two nonadjacent angles made by the crossing of two lines by a third line, one angle being interior, the other exterior, and both being on the same side of the third line.

Word History and Origins

Origin of corresponding angles¹

First recorded in 1790–1800

Example Sentences

Step 3: The big, medium, and little triangles are similar in the technical sense: their corresponding angles are equal and their corresponding sides are in proportion.

From The New Yorker

Step 3: The big, medium, and little triangles are similar in the technical sense: their corresponding angles are equal and their corresponding sides are in proportion.

From The New Yorker

At this point it is customary to define similar polygons as such as have their corresponding angles equal and their corresponding sides proportional.

From Project Gutenberg

Instead of "corresponding angles" we may say "homologous angles," but there seems to be no reason for using the less familiar word.

From Project Gutenberg

The corresponding angles on the left side of the tablet have been broken away, but the upper angle appears to have contained a situla.

From Project Gutenberg