Vocabulary
One end point and goes infinitely in one direction.
What is a ray.
It takes this many points to name a line.
What is 2
The name of the point where the two rays meet to form an angle.
What is the vertex.
Each of the pairs of opposite angles made by two intersecting lines. They are congruent.
What is vertical angles.
This refers to two objects that never meet. They have the same slope.
What is parallel.
The point in the middle of a line segment where a bisector would intersect the segment.
What is the midpoint.