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三角形、四边形是平面几何的基础内容,全等三角形是研究特殊三角形和四边形的重要工具,熟练运用三角形内角和定理、外角关系定理,平行四边形及特殊平行四边形性质及判定,用以解决简单的计算或说明问题等是中考重点考查之一.
Triangles and quadrilaterals are the basic contents of plane geometry. The congruent triangles are important tools for studying special triangles and quadrilaterals. They are proficient in using the internal angles and the theorems of triangles, the theorems of external angles, the properties of parallelograms and special parallelograms to solve the simple calculation Or explain the problem is one of the key exams in the exam.