Class 6 Maths Chapter 2, Lines and Angles, builds the foundations of plane geometry—points, line segments, lines, rays and angles—and teaches how to compare, classify, measure and draw angles using a 360° protractor.
What Class 6 Mathematics Chapter 2 Covers
2.1–2.8 Point, Line Segment, Line, Ray & Special Angles defines points, line segments (shortest distance between two points), lines and rays (2.1–2.4); introduces an angle formed by two rays sharing a vertex (2.5); compares angles by superimposition and rotating straw arms (2.6–2.7); and defines full turn, straight angle, right angle (perpendicular lines), acute angle, obtuse angle and reflex angle (2.8).
2.9–2.11 Measuring, Drawing & Classifying Angles in Degrees divides a full circle into 360 degrees (1°), builds an unlabelled and labelled 180° protractor, measures angles using inner and outer scales (2.9), draws angles of given degree measures and plays the Angle Estimation Game (2.10), and classifies acute (0°–90°), right (90°), obtuse (90°–180°), straight (180°) and reflex (180°–360°) angles including clock-hand angles and Ashoka Chakra spokes (2.11).
Exercises in Chapter 2
- Figure it Out exercise sets across every section with step-by-step Chapter Solutions included at the end of the PDF.
- Summary key formulas, visual proofs, and mathematical puzzles.
Read Class 6 Mathematics Chapter 2 Online
More Chapters
- Previous: Chapter 1: Patterns in Mathematics
- Next: Chapter 3: Number Play
- Hindi medium: Class 6 Maths Chapter 2 PDF in Hindi (Ganita Prakash)
- All Mathematics chapters and the other Class 6 books: Class 6 NCERT books 2026-27
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FAQ
What are the degree ranges of acute, right, obtuse, straight, and reflex angles?
Acute angle: greater than 0° and less than 90°; Right angle: exactly 90°; Obtuse angle: greater than 90° and less than 180°; Straight angle: exactly 180°; Reflex angle: greater than 180° and less than 360°.
What is the angle between two adjacent spokes of the Ashoka Chakra?
The Ashoka Chakra has 24 equally spaced spokes in a 360° full circle, so the angle between any two adjacent spokes is 360° ÷ 24 = 15°.