单词 | head angle |
释义 | > as lemmashead angle ΚΠ 1570 H. Billingsley tr. Euclid Elements Geom. i. f. 23v If two right lines cut the one the other: the hed angles [L. anguli, Gk. γωνίας] shal be equal the one to the other. < as lemmas |
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