alternate angle


Definition of alternate angle

: one of a pair of angles with different vertices and on opposite sides of a transversal at its intersection with two other lines:
a : one of a pair of angles inside the two intersected lines

called also alternate interior angle

b : one of a pair of angles outside the two intersected lines

called also alternate exterior angle

Illustration of alternate angle

Illustration of alternate angle

alternate interior angles a, a′, b, b′; alternate exterior angles c, c′, d, d′

Examples of alternate angle in a Sentence

Recent Examples on the Web Also, notice that the tops of the cutting teeth are ground at alternating angles, meaning one tooth angles to the left, the next to the right. Joseph Truini, Popular Mechanics, "How To Sharpen Your Chainsaw Like a Pro," 24 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'alternate angle.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of alternate angle

1570, in the meaning defined above

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Time Traveler for alternate angle

Time Traveler

The first known use of alternate angle was in 1570

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Cite this Entry

“Alternate angle.” Dictionary, Merriam-Webster, Accessed 29 Oct. 2020.

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