... angle bisection 角平分 angle bisector 角平分线；分角线 㗾 angle in the alternate segment 交错弓形的圆周角 ...
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... radius半径 angle bisector角平分线 diagonal对角线 ...
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angle bisector theorem 角平分线定理
external angle bisector 外分角
angle e bisector 角平分线
bisector of angle 角的平分线
bisector of an angle 角的平分线
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The utility model relates to an angle bisector drawing instrument which consists of a rhombus-shaped frame formed by articulating four connecting bars.
一种角平分线绘制器，它由四条连杆铰接组成的菱形框架构成。
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