CBSE · Class 6 · Mathematics · Chapter 9

Symmetry

Recognise and create symmetrical figures using lines of symmetry, reflection and rotational patterns.

7 lessons 45 min
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Lessons in this chapter

  1. 1Recognising Mirror SymmetryUse folding and reflection to decide whether a whole figure has matching halves.
  2. 2Making Symmetry by Folding and CuttingPredict and explain the mirror patterns made by ink, holes and cuts in folded paper.
  3. 3Finding and Completing Lines of SymmetryCount reflection axes and build complete figures on square and dot grids.
  4. 4Rotation and Symmetric TurnsFollow a figure around a fixed centre and identify the turns that leave its appearance unchanged.
  5. 5Radial Patterns and Rotation OrderBuild equal-arm patterns and connect their smallest matching turns to a full rotation.
  6. 6Symmetry in Designs and the WorldCombine reflection and rotation to analyse coloured patterns, buildings, wheels and a strategy game.
  7. 7Chapter Summary and PracticeConnect folding, reflection and rotation, then use them in mixed chapter problems.
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