The correct answer is C. Coplanar, line.
The undefined terms are needed to define parallel lines are coplanar and line.
<h3>What are parallel lines?</h3>
Two lines in a single plane that are equally spaced apart and never cross each other are said to be parallel lines in geometry. All horizontal and vertical shapes are possible.
Examples of parallel lines can be found everywhere, including zebra crossings, rows of notebooks, and the nearby railroad tracks.
Some characteristics of parallel lines are-
- They are usually parallel straight lines that are spaced equally apart.
- These lines are coplanar.
- No regardless how far you extend these in any direction, they never come together.
- A transversal line will create four angles at each of its two sites of intersection with two parallel lines if it does so.
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The complete question is-
Which undefined terms are needed to define parallel lines?
A. Point, line
B. Line, plane
C. Coplanar, line
D. Point, coplanar
