angle bisector 分角线;角平分线
- Select the angle you want to construct the bisector of…
选择您想要建构角平分线的角… - It is a proposition having not been involved in "Descriptive Geometry" on the projection of bisector of angle for two intersecting lines.
关于相交二直线夹角平分线的投影是画法几何学均未涉及的命题。
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