Mathematics for IGCSE & O level - Geometrical Terms (Section 5 - No. 43)
Which of the following statements is true regarding parallel lines?
They intersect at a 90-degree angle.
They never intersect.
They always intersect at some point.
They form a right angle.
설명
Parallel lines are lines in a plane that do not intersect; that is, two lines in a plane that do not meet or touch each other at any point are said to be parallel.