【思维导图】【名师箴言】学习是一个没有终点的旅程,在几何学习的旅程中先从“一线”(线段、射线、直线)到“两线”(角、对顶角)的学习,再到“三线”(三角形、等腰三角形、直角三角形)和“四线”(平行四边形、矩形、菱形、正方形)的学习,其中也见证了三角形和四边形的友谊(两个全等的三角形可以拼成一个平行四边形或一个三角形可以旋转出一个平行四边形).知 Mind Map】 【Master Proverbs learning is a journey without end, in the geometry of the journey from “line ” (line, ray, straight line) to “two lines ” (angle, right angle ), Then the study of the “three lines” (triangles, isosceles triangles, right triangles) and the “four lines” (parallelograms, rectangles, rhombuses, squares), which also saw the friendship between triangles and quadrilaterals (Two congruent triangles can be pieced together into a parallelogram or a triangle can be rotated out of a parallelogram.) Know