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- UID
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说明
Be a geometer with Dr. Geo: construct and manipulate interactive sketches.
Dr. Geo is an interactive geometry application. It allows one to create a geometric sketch and to manipulate it according to its constraints. It is usable at home or at school, in primary or secondary education level.
With Dr. Geo you can construct:
可以构造：
- free point, mobile point on line, intersection point.（自由点、直线上的约束点、交点）
- line, ray, segment, vector, circle, arc, polygon, locus （直线、射线、线段，向量，圆，圆弧，多边形，轨迹）
- parallel and perpendicular line. （平行线和垂线）
- transform geometric objects by symmetry, reflection, translation, homothety. （几何变换：对称，反射，平移...）
- calculate angle, length, distance. （度量角度、长度、距离）
- teach Dr. Geo macro-construction. （宏结构）
This free version comes without the perpendicular, parallel and circle tools （免费版本不提供平行线、垂线和圆... ）
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