共きょう役やく角かく

きょ

う

や

く

か

く

Meanings

1

noun

conjugate angles

A geometry term referring to two angles that sum to 360 degrees. Used in technical contexts.

役duty, war, campaign

角angle, corner, square

補ほ角かく
補角 (supplementary angles) sum to 180 degrees, while 共役角 sum to 360 degrees.
余よ角かく
余角 (complementary angles) sum to 90 degrees, while 共役角 sum to 360 degrees.

Compound of 共役 (conjugate) and 角 (angle). The exact historical derivation is uncertain; the term is a modern mathematical coinage.