the undefined terms line and plane are needed to precisely define which mathematical term?\nline…

the undefined terms line and plane are needed to precisely define which mathematical term?\nline segment\nperpendicular lines\nparallel lines\nray
Answer
Brief Explanations:
- Line segment: Defined using the undefined term "line" (a line segment is a part of a line between two endpoints). Does not require the undefined term "plane".
- Perpendicular lines: Defined as two lines that intersect at a right - angle. Requires the undefined term "line" but not "plane".
- Parallel lines: In geometry, parallel lines are defined as two lines in a plane that do not intersect. Here, both the undefined terms "line" and "plane" are used. The key is the mention of them being in a plane.
- Ray: Defined using the undefined term "line" (a ray is a part of a line that starts at a point and extends infinitely in one direction). Does not require the undefined term "plane".
Answer:
C. parallel lines