如图,点P是△ABC所在平面外一点,PA,PB,PC两两垂直,且PO⊥平面ABC于点O,则点O是△ABC的外心,内心,垂心,重心?
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![如图,点P是△ABC所在平面外一点,PA,PB,PC两两垂直,且PO⊥平面ABC于点O,则点O是△ABC的外心,内心,垂心,重心?](/uploads/image/z/2796874-34-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E7%82%B9P%E6%98%AF%E2%96%B3ABC%E6%89%80%E5%9C%A8%E5%B9%B3%E9%9D%A2%E5%A4%96%E4%B8%80%E7%82%B9%2CPA%2CPB%2CPC%E4%B8%A4%E4%B8%A4%E5%9E%82%E7%9B%B4%2C%E4%B8%94PO%E2%8A%A5%E5%B9%B3%E9%9D%A2ABC%E4%BA%8E%E7%82%B9O%2C%E5%88%99%E7%82%B9O%E6%98%AF%E2%96%B3ABC%E7%9A%84%E5%A4%96%E5%BF%83%2C%E5%86%85%E5%BF%83%2C%E5%9E%82%E5%BF%83%2C%E9%87%8D%E5%BF%83%3F)
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