Get NCERT Solutions of all exercise questions and examples of Chapter 6 Class 9 Lines and Angles free at teachoo. Answers to each question has been solved with Video. Theorem videos are also available.

In this chapter, we will learn

**Basic Definitions**- Line, Ray, Line Segment, Angles, Types of Angles (Acute, Obtuse, Right, Straight, Reflex), Intersecting Lines, Parallel Lines- What is
**Linear Pair of Angles** **Vertically Opposite Angles**are equal**Angles formed by a transversal**on parallel lines - Corresponding Angles, Alternate Interior Angles, Alternate Exterior Angles, Interior Angles on the same of transversal. And its properties**Theorem 6.6**- Lines parallel to the same line are parallel to each other**Angle Sum Property**of Triangle**Exterior Angle**Property of a Triangle

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