Given two noncoplanar lines p and q, and a point A, does there always exist...

therightwomanwf

therightwomanwf

Answered

2022-07-11

Given two noncoplanar lines p and q, and a point A, does there always exist a line that passes through p, q and A?

Answer & Explanation

treccinair

treccinair

Expert

2022-07-12Added 18 answers

Step 1
Once you have the plane α ( p , A ) , this happens if q belongs to a plane which is parallel to α .
For example, let p be the x axis and A = ( 0 , 1 , 0 ) : the plane containing them is z = 0 . Any line passing through p and A is confined on this plane (axiom I.6: "the line lies on the plane"). Now imagine q being on the plane z = 1 and you have your counterexample.

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