plane angle

noun

: 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

Word History

First Known Use

1570, in the meaning defined above

Time Traveler
The first known use of plane angle was in 1570

Dictionary Entries Near plane angle

Cite this Entry

“Plane angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/plane%20angle. Accessed 18 Jun. 2024.

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