- #1

LCharette

- 9

- 0

## Homework Statement

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

## Homework Equations

## 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.