Question

which undefined term can contain parallel lines?
○ line
○ plane
○ point
○ ray

Explanation:

1. Recall the definitions of undefined terms in geometry:

• A line is a one - dimensional figure that extends infinitely in both directions. A single line cannot contain parallel lines as parallel lines are two or more lines.
• A plane is a two - dimensional flat surface that extends infinitely far. In a plane, we can have two or more lines that are parallel (lines that never intersect and are equidistant from each other).
• A point is a location with no size. It cannot contain lines, let alone parallel lines.
• A ray is a part of a line that starts at a point and extends infinitely in one direction. A single ray cannot contain parallel lines.

Answer:

B. plane