Ex 12.2, 2 (h) Give the order of rotational symmetry for each figure: Since circle is divided into 3 equal sectors, Angle at center = (360°)/3 = 120° This figure looks same as previous Suppose it rotates 120° again This figure looks same as previous Thus, in 1 – full turn (i.e 360°) The figure is same as that of initial 3 turns. So, we say that figure has rotational symmetry of order 3

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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, Social Science, Physics, Chemistry, Computer Science at Teachoo.