旋转是初中数学新课程教材中给出的一个新概念,这一新知识在解决一些有难度的中考几何题中应用广泛,屡建奇功!也充分体现了思维的灵活性和综合解题能力。所谓旋转是将一个图形绕一个定点(旋转中心)沿某一个方向转动一个度数(旋转角度),这样的图形运动称为旋转。旋转的 Rotation is a new concept given in the textbook of junior high school math new curriculum. This new knowledge has been widely used in solving some difficult senior high school entrance examination questions and has repeatedly built outstanding achievements! It also fully reflects the flexibility of thinking and comprehensive problem solving skills . The so-called rotation is a figure around a fixed point (center of rotation) in one direction by a degree (rotation angle), such graphic motion is called rotation. Rotating