CBSE · Class 6 · Mathematics · Chapter 2

Lines and Angles

Explore points, line segments, rays, lines and different types of angles through observation and measurement.

9 lessons 50 min
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Lessons in this chapter

  1. 1Points, Segments, Lines, and RaysDiscover the geometric objects that describe locations, straight paths, and directions.
  2. 2Angles as TurnsSee an angle as a turn, identify its parts, and name it clearly.
  3. 3Comparing AnglesCompare openings fairly and discover why longer arms do not make a larger angle.
  4. 4Straight Turns, Right Angles, and Perpendicular LinesBuild reference angles by folding and use them to recognise different openings.
  5. 5Degrees and a Homemade ProtractorBuild an angle scale from equal turns and discover what protractor readings mean.
  6. 6Measuring Angles AccuratelyRead a protractor with understanding and check whether a measurement is trustworthy.
  7. 7Drawing, Estimating, and Finding Angles Around UsConstruct precise angles, improve your estimates, and identify turns in familiar situations.
  8. 8Classifying Angles and Solving Angle ProblemsUse precise angle ranges and reference turns to solve connected geometry problems.
  9. 9Chapter Summary and PracticeConnect the chapter’s geometric ideas and apply them in mixed drawing, measurement, and reasoning tasks.
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