Read Edit View history 平面角 píngmiànjiǎo plane angle Origin Definitions Defs Strokes Stroke Words Sentences Sents created sense approved 平面角 · píngmiànjiǎo · plane angle 2026/03/04 平面角 píngmiànjiǎo plane angle plane angle 这个几何图形的平面角是九十度。 created sense Mar 4, 2026, 02:25 AM