About RS Aggarwal Solutions Class 9 Maths Chapter 7 Lines and Angles
In Class 9 CBSE (Central Board of Secondary Education) mathematics, one of the fundamental topics covered is "Lines and Angles." This chapter introduces students to the basic concepts and properties of lines and angles and explores their relationships and applications. Understanding lines and angles is crucial as it forms the foundation for various geometrical concepts and helps students solve problems related to shapes and figures. Check out all the solutions of RS Aggarwal for class 9 Maths and to get the best Home tuition for class 9 Maths find the tutors.
Here is a brief introduction to the key concepts covered in the "Lines and Angles" chapter:
Line: A line is a straight path that extends indefinitely in both directions. It has no endpoints and is represented by a straight line with two arrowheads.
Ray: A ray is a part of a line that has one endpoint and extends indefinitely in the other direction. It is represented by a straight line with one endpoint and an arrowhead.
Line Segment: A line segment is a part of a line that has two endpoints. It is represented by a line segment with two endpoints.
Angle: An angle is formed when two rays share a common endpoint called the vertex. The two rays are known as the arms of the angle. Angles are measured in degrees (°) or radians (rad).
Types of Angles: There are various types of angles based on their measurements and relationships: Check out all the solutions of RS Aggarwal for class 9 Maths and to get the best Home tuition for class 9 Maths find the tutors.
Acute Angle: An angle that measures less than 90°.
Right Angle: An angle that measures exactly 90°.
Obtuse Angle: An angle that measures more than 90° but less than 180°.
Exercise of RS Aggarwal Class 9 Chapter 7 Lines and Angles
Chapter 7 Lines and Angles Exercise 7A
Chapter 7 Lines and Angles Exercise 7B
Chapter 7 Lines and Angles Exercise 7C
Chapter 7 Multiple Choice Questions (MCQs)