supplementary angle

noun

: one of two angles or arcs whose sum is 180°
usually used in plural

Word History

First Known Use

circa 1924, in the meaning defined above

Time Traveler
The first known use of supplementary angle was circa 1924

Dictionary Entries Near supplementary angle

Cite this Entry

“Supplementary angle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/supplementary%20angle. Accessed 21 Jun. 2024.

Kids Definition

supplementary angle

noun
: one of two angles or arcs whose sum is 180 degrees
usually used in plural
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