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在平面几何里,平行四边形的性质大家都熟悉,把平行四边形放在直角坐标系中,会有怎样的特殊性质呢?本文探究了平面直角坐标系下平行四边形的一个性质及应用.
In plane geometry, the properties of parallelograms are familiar to all people. What are the special properties of parallelograms placed in a rectangular coordinate system? This paper explores a property and application of parallelograms in a Cartesian coordinate system.