一个几何定理的证明方法初探

A Preliminary Probe into the Proving Method of a Geometry Theorem

用三角形面积公式先证明推论 ,再用推论结果去证明定理 ,定理和推论都得以严格证明 ,学生易于理解和接受。

To prove the corollary first with the area formula for a triangle,then to prove the theorem with the corollary,it would make both the theorem and corollary proved strictly,so that the students understand and accept it easily.