如图所示,已知l1∥l2,mn分别和直线如图,已知l1∥l2,MN分别和直线l1、l2交于点A、B,ME分别和直线l1、l2交于点C、D,点P在MN上(P点与A、B、M三点不重合).(1)如果点P在A、B两点之间运动时,∠α、
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![如图所示,已知l1∥l2,mn分别和直线如图,已知l1∥l2,MN分别和直线l1、l2交于点A、B,ME分别和直线l1、l2交于点C、D,点P在MN上(P点与A、B、M三点不重合).(1)如果点P在A、B两点之间运动时,∠α、](/uploads/image/z/9640069-61-9.jpg?t=%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%2C%E5%B7%B2%E7%9F%A5l1%E2%88%A5l2%2Cmn%E5%88%86%E5%88%AB%E5%92%8C%E7%9B%B4%E7%BA%BF%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5l1%E2%88%A5l2%2CMN%E5%88%86%E5%88%AB%E5%92%8C%E7%9B%B4%E7%BA%BFl1%E3%80%81l2%E4%BA%A4%E4%BA%8E%E7%82%B9A%E3%80%81B%2CME%E5%88%86%E5%88%AB%E5%92%8C%E7%9B%B4%E7%BA%BFl1%E3%80%81l2%E4%BA%A4%E4%BA%8E%E7%82%B9C%E3%80%81D%2C%E7%82%B9P%E5%9C%A8MN%E4%B8%8A%EF%BC%88P%E7%82%B9%E4%B8%8EA%E3%80%81B%E3%80%81M%E4%B8%89%E7%82%B9%E4%B8%8D%E9%87%8D%E5%90%88%EF%BC%89%EF%BC%8E%EF%BC%881%EF%BC%89%E5%A6%82%E6%9E%9C%E7%82%B9P%E5%9C%A8A%E3%80%81B%E4%B8%A4%E7%82%B9%E4%B9%8B%E9%97%B4%E8%BF%90%E5%8A%A8%E6%97%B6%2C%E2%88%A0%CE%B1%E3%80%81)
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