What do you call lines that cross each other?

• A. Parallel lines
• B. Intersecting lines
• C. Perpendicular lines
• D. Skew lines

Answer: (B)

Lines that cross each other are called intersecting lines. When two lines intersect, they meet at a single point, the intersection point. They can cross at any angle, like the two lines forming an X. If the crossing happens at a right angle, the lines are perpendicular. If lines never meet because they’re in different planes, they’re skew lines, and if lines run in the same plane but never meet, they’re parallel. So the defining feature of intersecting lines is that they share exactly one common point where they cross.