在中考中频现一类求旋转90°(或含90°)点的坐标问题,常规思路是在直角顶点处构建“一线三等角”模型.这类问题还可以利用平移程式化求解,下面提供几例供师生学习参考.一、点绕某点旋转90°引例(2010年菏泽)已知点P的坐标为(m,n),O为坐标原点,连接OP,将线段OP In the mid-frequency test, the current problem is to find the coordinates of a point rotated by 90° (or 90°). The conventional idea is to build a “triangle-angled” model at the vertices of the right angle. This type of problem can also be solved by the translational stylization method. The following provides a few examples for teachers and students to learn reference. First, the point rotates around a point 90 ° cited (Heze 2010) coordinates of the known point P is (m, n), O is the origin of the coordinates, connect the OP, the line OP