Parallel lines are indicated by arrows going in the same direction. Parallel lines are indicated by arrows going in the same direction. If there is more than one set of parallel lines in a diagram, ...

CBSE Class 9 Maths extra questions and answers for Chapter 6 - Lines and Angles provided here for students to revise important fundamental concepts. Practicing with these questions will help you ...

Horizontal lines run left to right, parallel to the horizon, with slope 0 and equation y = k. Vertical lines run top to bottom, perpendicular to the horizon, with undefined slope and equation x = k.