How Many Rays?

Definition: Collinear points lie on the same line.

Question: Are two points always collinear? Why or why not?

Now explore the following problems:

How many rays are determined by 3 collinear points?

How many rays are determined by 4 collinear points?

How many rays are determined by 5 collinear points?

Now look for a generalization: How many rays are determined by n collinear points?