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Question Number 213330 by MrGaster last updated on 02/Nov/24
Commented by MathematicalUser2357 last updated on 06/Nov/24
Ineedtosendtheequationtomychineselover
Answered by MrGaster last updated on 03/Nov/24
Myanswertothefirstquestion:(1)PA⊥ABCD→PA⊥AD+PB⊥AD→AD⊥PAB→AD⊥AB+AB⊥BC+ABCD→AD//BC→AD//PBC[Q.E.D](2)……
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