Question

Explain why there must be at least two lines on any given plane

Answer 1

Explanation:

A plane contains at least three noncollinear points.

Three noncollinear points would have at least two lines containing them.

Two points make up one line, so two lines are necessary for three noncollinear points.

Answer 2

There has to be at least two lines on any given plane in order to plot an order pair.