已知l，m是两条不同的直线，α，β是两个不同的平面．下列命题： ①若l⊂α，m⊂α，l∥β，m∥β，则α∥β； ②若l⊂α，l∥β，α∩β=m，则l∥m；③若α∥β，l∥α，则l∥β； ④若_刷题宝

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已知l，m是两条不同的直线，α，β是两个不同的平面．下列命题：

①若l⊂α，m⊂α，l∥β，m∥β，则α∥β；

②若l⊂α，l∥β，α∩β=m，则l∥m；

③若α∥β，l∥α，则l∥β；

④若l⊥α，m∥l，α∥β，则m⊥β．

其中真命题是____（写出所有真命题的序号）．

上一题下一题 0.0难度选择题更新时间:2019-08-11 08:38:24

答案(点此获取答案解析）

②④

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