(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Use only incidence axioms to prove that every line is contained by at least two planes.

2. Relevant equations

3. The attempt at a solution

1. Let l be any line (Given)

2. l has at least two points A and B such that l=AB (I-5(4) Each line has at least two points)

3. Space has at least 3 noncollinear points, that is A,B, and C (I-5(2) Space has at least three noncollinear points)

4. There exists lines AC and BC (I-1 Each two points determines a line)

From here I do not know where to go or even if I am on the right track.

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# Homework Help: I need to prove that every line l is contained by at least 2 planes

Can you offer guidance or do you also need help?

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