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单词 supplemental angle
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supplemental angle
supplemental angle n. Mathematics either of two angles which together equal 180 degrees.
ΚΠ
1742 R. Long Astron. I. Introd. 22 The sine of every acute angle scb, is also the sine of the obtuse angle sca, the supplemental angle to scb.
1863 R. Townsend Chapters on Mod. Geom. I. i. 18 One of the two supplemental angles between the two tangents is equal to the internal and the other to the external angle between the two radii.
2004 W. D. Pflaum Technol. Fix xix. 177 With simple, precise lines he shows complementary pairs, supplemental angles, and vertical angles.
extracted from supplementaladj.n.
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