圆规 yuánguī compass Origin Definitions Defs Strokes Stroke Words Sentences Sents 椭圆规 tuǒyuánguī ellipsograph A tool used for drawing ellipses半圆规 bànyuánguī protractor a semi-circular tool used for measuring and drawing angles, typically marked with 180 degrees and made of plastic; also called [[量角器|量角器|liang2 jiao3 qi4]]圆规座 yuánguīzuò Circinus the constellation Circinus