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Ex 12.3, 5 Name the quadrilaterals which have both line and rotational symmetry of order more than 1.Square In case of square, we rotate it about the center Let’s rotate it by 90° The figure looks the same as previous Now, suppose we rotate The figure looks the same as previous Again, we rotate it by 90° The figure looks the same as previous Suppose, it again rotates 90° The figure looks the 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 has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.