exterior angle

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exterior angle

1. an angle of a polygon contained between one side extended and the adjacent side

2. any of the four angles made by a transversal that are outside the region between the two intersected lines

exterior angle [ek′stir·ē·ər ′aŋ·gəl]

(mathematics)

An angle between one side of a polygon and the prolongation of an adjacent side.

An angle made by a line (the transversal) that intersects two other lines, and either of the latter on the outside.

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