Parallel lines. On parallel lines, alternate (Z) angles are equal. ... are co-interior angles) Back to top. Test section. Question 1. What are intersecting lines? Show answer Hide answer.

Class 9 Maths Chapter 6 Lines and Angles is available here for download in PDF format. We have provided here the latest edition of the chapter which is published by the NCERT on its official website.

5. A transversal intersects two parallel lines as shown in the figure given below. Then which of the following statements is correct? (a) Each pair of alternate interior angles is equal.