Two lines are coincident if they have only one point in common.

In the following figure, name the five line segments:

In the following figure, name the five rays:

In the following figure, name four collinear points.:

In the following figure, name two pairs of non-intersecting line segments.

Two distinct points in a plane determine a _____ line. (unique/two/three)

Two distinct _____ in a plane cannot have more than one point in common. $\left(\mathrm{lines} / \mathrm{points}\right)$

How many least number of distinct points determine a unique line?