我们知道,任意两点关于它们所连线段的中点成中心对称,在平面直角坐标系中,任意两点P(x1,y1)、Q(x2,y2)的对称中心的坐标为(2(x1+x2),2(y1+y2)).观察应用:(1)如图,在平面直角坐标系中,若
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 03:11:18
![我们知道,任意两点关于它们所连线段的中点成中心对称,在平面直角坐标系中,任意两点P(x1,y1)、Q(x2,y2)的对称中心的坐标为(2(x1+x2),2(y1+y2)).观察应用:(1)如图,在平面直角坐标系中,若](/uploads/image/z/13278069-45-9.jpg?t=%E6%88%91%E4%BB%AC%E7%9F%A5%E9%81%93%2C%E4%BB%BB%E6%84%8F%E4%B8%A4%E7%82%B9%E5%85%B3%E4%BA%8E%E5%AE%83%E4%BB%AC%E6%89%80%E8%BF%9E%E7%BA%BF%E6%AE%B5%E7%9A%84%E4%B8%AD%E7%82%B9%E6%88%90%E4%B8%AD%E5%BF%83%E5%AF%B9%E7%A7%B0%2C%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E4%BB%BB%E6%84%8F%E4%B8%A4%E7%82%B9P%28x1%2Cy1%29%E3%80%81Q%28x2%2Cy2%29%E7%9A%84%E5%AF%B9%E7%A7%B0%E4%B8%AD%E5%BF%83%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%882%28x1%EF%BC%8Bx2%29%2C2%28y1%EF%BC%8By2%29%EF%BC%89.%E8%A7%82%E5%AF%9F%E5%BA%94%E7%94%A8%EF%BC%9A%EF%BC%881%EF%BC%89%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E8%8B%A5)
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