摘要:已知如图9―35.斜三棱柱ABC―A1B1C1的侧面A1ACC1与底面ABC垂直.∠ABC=90°.BC=2.AC=2.且AA1⊥A1C.AA1=A1C.(Ⅰ)求侧棱A1A与底面ABC所成角的大小,(Ⅱ)求侧面A1ABB1与底面ABC所成二面角的大小,(Ⅲ)求侧棱B1B和侧面A1ACC1的距离.
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已知如图,斜三棱柱ABC-A1B1C1的侧面A1ACC1与底面ABC垂直,∠ABC=90°,BC=2,AC=2
,且AA1⊥A1C,AA1=A1C.
(1)求侧棱A1A与底面ABC所成角的大小;
(2)求侧面A1ABB1与底面ABC所成二面角的大小;
(3)求顶点C到侧面A1ABB1的距离. 查看习题详情和答案>>
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(1)求侧棱A1A与底面ABC所成角的大小;
(2)求侧面A1ABB1与底面ABC所成二面角的大小;
(3)求顶点C到侧面A1ABB1的距离. 查看习题详情和答案>>