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  1. Chapter 14 Class 7 Symmetry
  2. Concept wise

Transcript

Rotational Symmetry – Plus SignSuppose it rotates 90° The figure looks the same as previous Now, suppose it rotates again 90° The figure looks the same as previous Again it rotates 90° Now, suppose it rotates again 90° The figure looks the same as previous Now, suppose it rotates again 90° The figure is same as previous Thus, Thus in 1 full turn (i.e. 360°) The figure is same as that of initial 4 turns So, we say that figure has rotational symmetry of order 4.

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.