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如图，在平行四边形ABCD中，按以下步骤作图：①以A为圆心，任意长为半径作弧，分别交AB，AD于点M，N；②分别以M，N为圆心，以大于MN的长为半径作弧，两弧相交于点P；③作AP射线，交边CD于点Q...
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