| plane angle | (n) an angle formed by two straight lines (in the same plane) |
| 平面角 | [へいめんかく, heimenkaku] (n) plane angle [Add to Longdo] |
| bisector of plane angle | เส้นแบ่งครึ่งมุมระนาบ [คณิตศาสตร์๑๙ ก.ค. ๒๕๔๗] |
| 平面角 | [平 面 角] a plane angle #171,013 [Add to Longdo] |