Angles made by parallel lines Parallel lines are straight lines which have the same direction and so never meet. Arrowheads show lines are parallel.

Parallel lines are lines that never cross each other - they keep the same distance apart from each other. When two lines intersect, the opposite (X) angles are equal. On parallel lines, alternate ...

Class 9 Maths NCERT Book Chapter 6 - Lines and Angles is provided here in PDF format. Get the latest edition of the chapter to prepare for your Maths Exam in the 2021-2022 session.