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  1. Chapter 14 Class 7 Symmetry
  2. Serial order wise

Transcript

Ex 14.2, 2 (g) Give the order of rotational symmetry for each figure: Here, the angle in the middle is Angle = (360°)/6 = 60° Suppose it rotates 60° about center The figure looks the same as previous Now suppose it rotates again 60° The figure looks the same as previous Now suppose it rotates again 60° The figure looks the same as previous Again, it rotates 60° The figure looks the same as previous Once again, it rotates 60° The figure looks the same as previous Once again, it rotates 60° The figure looks the same as previous Suppose it again rotates 60° The figure looks the same as previous Thus, Thus, in 1 full turn (i.e 360°) The figure is same as that of initial 6 turns So, we say that figure has rotational symmetry of order 6

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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.