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全等三角形是初中几何的重要内容之一.它不仅是中考的重要考查内容,更是后续学习中研究图形性质的基础.国家课程标准中是这样要求的:(1)理解全等三角形的概念,能识别全等三角形中的对应边、对应角;(2)掌握基本事实:两边及其夹角分别相等的两个三角形全等(简记为SAS);(3)掌握基本事实:两角及其夹边分别相等的两个三角形全等(简记为ASA);(4)掌握基本事实:三边分别相等的两个三角形全等(简记为SSS);(5)证明定理:两角及其中一组等角的对边分别
The congruent triangle is one of the important contents of junior high school geometry.It is not only an important examination content of the middle school entrance examination, but also the basis for studying the graphic nature in the follow-up study.As the national curriculum standard requires: (1) To understand the concept of congruent triangles , Can identify congruent triangles in the corresponding side, the corresponding angle; (2) master the basic facts: both sides and its angle equal to the two triangles congruent (abbreviated as SAS); (3) master the basic facts: (4) Grasp the basic facts: two triangles congruent equal to three sides (abbreviated as SSS); (5) Proof theorem: two Angle and one of the opposite sides of the equiangular