What is order of rotational symmetry for figure - Two intersecting - Ex 12.2

part 2 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry
part 3 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry
part 4 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry
part 5 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry part 6 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry part 7 - Ex 12.2, 2 (b) - Ex 12.2 - Serial order wise - Chapter 12 Class 7 Symmetry

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Ex 12.2, 2 (b) Give the order of rotational symmetry for each figure: Here, ∠AOB = 80° But, ∠AOB + ∠BOC = 180° 80° + ∠BOC = 180° ∠BOC = 180° − 80° ∠BOC = 100° Also, ∠AOB = ∠COD = 80° And ∠BOC = ∠ AOD = 100° Thus, Thus, in 1 full turn (i.e. 360°) This figure is same as that of initial 2 turns So, we say that this figure has rotational symmetry of order 2

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo