如图在直角坐标系中,边长为2的等边三角形ABC的顶点A在直线y=-x+4上滑动,边BC始终保持水平状态,当点C落在标轴上时,则点B的坐标是?
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![如图在直角坐标系中,边长为2的等边三角形ABC的顶点A在直线y=-x+4上滑动,边BC始终保持水平状态,当点C落在标轴上时,则点B的坐标是?](/uploads/image/z/6867268-52-8.jpg?t=%E5%A6%82%E5%9B%BE%E5%9C%A8%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E8%BE%B9%E9%95%BF%E4%B8%BA2%E7%9A%84%E7%AD%89%E8%BE%B9%E4%B8%89%E8%A7%92%E5%BD%A2ABC%E7%9A%84%E9%A1%B6%E7%82%B9A%E5%9C%A8%E7%9B%B4%E7%BA%BFy%3D-x%2B4%E4%B8%8A%E6%BB%91%E5%8A%A8%2C%E8%BE%B9BC%E5%A7%8B%E7%BB%88%E4%BF%9D%E6%8C%81%E6%B0%B4%E5%B9%B3%E7%8A%B6%E6%80%81%2C%E5%BD%93%E7%82%B9C%E8%90%BD%E5%9C%A8%E6%A0%87%E8%BD%B4%E4%B8%8A%E6%97%B6%2C%E5%88%99%E7%82%B9B%E7%9A%84%E5%9D%90%E6%A0%87%E6%98%AF%3F)
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