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设m,n是不同的直线,α、β、γ是三个不同的平面,有以下四个命题: ①若m⊥α,n⊥α,则m∥n; ②若α∩γ=m,β∩γ=n,m∥n则α∥β; ③若α∥β,β∥γ,m⊥α,...
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高三上学期数学《》真题及答案
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αβ是两个不同的平面mn是平面及之外的两条不同直线给出四个论断①m⊥n②α⊥β③n⊥β④m⊥α以其中
已知mn是两条不同直线αβγ是三个不同平面下列命题中正确的有________.①若m∥αn∥α则m∥
已知mn是两条不同直线αβγ是三个不同平面下列命题中正确的有
若m∥α,n∥α,则m∥n
若α⊥γ,β⊥γ,则α∥β
若m∥α,m∥β,则α∥β
若m⊥α,n⊥α,则m∥n
已知mn是两条不同的直线αβγ是三个不同的平面下列结论中正确的有________.①若m∥αn∥α则
设mn是两条不同的直线αβγ是三个不同的平面给出下列四个命题①若m⊥αn∥α则m⊥n②若α⊥γβ⊥γ
①和②
②和③
③和④
①和④
αβ是两个不同的平面mn是平面αβ外的两条不同直线给出四个结论①m⊥n;②α⊥β;③n⊥β;④m⊥α
αβ是两个不同的平面mn是平面α及β外的两条不同的直线给出四个论断①m⊥n②α⊥β③m⊥α④n⊥β.
αβ是两个不同的平面mn是平面α及β之外的两条不同直线.给出四个论断①m⊥n②α⊥β③n⊥β④m⊥α
αβ是两个不同的平面mn是平面α及β之外的两条不同直线给出四个论断①m⊥n②α⊥β③n⊥β④m⊥α以
设mn是不同的直线αβ是不同的平面有以下四个命题①若m⊥nm⊥α则n∥α②若n⊥βm∥αα⊥β则m∥
0
1
2
3
设mn是不同的直线αβγ是不同的平的有以下四个命题①若α∥βα∥γ则β∥γ②若α⊥βm∥α则m⊥β③
①③
①④
②③
②④
已知mn是两条不同直线αβγ是三个不同平面下列命题中正确的有.①若m∥αn∥α则m∥n;②若α⊥γβ
设mn是两条不同的直线αβγ是三个不同的平面.有下列四个命题①若m⊂βα⊥β则m⊥α②若α∥βm⊂α
①③
①②
③④
②③
设mn是两条不同的直线αβγ是三个不同的平面则下列命题正确是
若m⊥n,n⊂α,则m⊥α
若m⊥α,m∥n,则n⊥α
若m∥α,n∥α,则m∥n
若α⊥γ,β⊥γ,则α∥β
αβ是两个不同的平面mn是平面αβ外的两条不同直线给出四个结论①m⊥n②α⊥β③n⊥β④m⊥α.以其
设mn是两条不同的直线αβγ是三个不同的平面给出下列四个命题①若m⊥αn∥α则m⊥n②若α∥ββ∥γ
①和②
②和③
③和④
①和④
设mn是两条不同的直线αβγ是三个不同的平面给出下列四个命题①若m⊂βα⊥β则m⊥α②若α∥βm⊂α
①③
①②
③④
②③
设mn是两条不同的直线αβγ是三个不同的平面有以下四个命题①⇒β∥γ②⇒m⊥β③⇒α⊥β④⇒m∥α其
①④
②③
①③
②④
设αβ是空间两个不同的平面mn是平面α及β外的两条不同直线.从①m⊥n②α⊥β③n⊥β④m⊥α中选取
设αβγ为三个不同的平面mn是两条不同的直线在命题α∩β=mn⊂γ且________则m∥n中的横线
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