plane angle

noun

Definition of plane angle

: an angle that for a given dihedral angle is formed by two intersecting lines each of which lies on a face of the dihedral angle and is perpendicular to the edge of the face

First Known Use of plane angle

1570, in the meaning defined above

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The first known use of plane angle was in 1570

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Cite this Entry

“Plane angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plane%20angle. Accessed 29 Oct. 2020.

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