角尺 jiǎochǐ set square Origin Definitions Defs Strokes Stroke Words Sentences Sents 三角尺 sānjiǎochǐ set square Pair of plastic or wooden triangles used for technical drawing and drafting to create straight lines and specific angles直角尺 zhíjiǎochǐ set square a set square; an L-shaped or triangular tool used for drawing or testing right angles