Ex 12.3, 7 - Chapter 12 Class 7 Symmetry

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Can we have a rotational symmetry of order more than 1 whose angle of - Ex 12.3

part 2 - Ex 12.3, 7 - Ex 12.3 - Serial order wise - Chapter 12 Class 7 Symmetry

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Ex 12.3, 7 Can we have a rotational symmetry of order more than 1 whose angle of rotation is (i) 45Ā°? Order of rotational symmetry = (360Ā°)/(š“š‘›š‘”š‘™š‘’ š‘œš‘“ š‘ š‘¦š‘šš‘šš‘’š‘”š‘Ÿš‘¦) = (360Ā°)/(45Ā°) = (72Ā°)/9 Since, order of rotational symmetry is an integer Hence it is possible Ex 12.3, 7 Can we have a rotational symmetry of order more than 1 whose angle of rotation is (ii) 17Ā°?Order of rotational symmetry = (360Ā°)/(š“š‘›š‘”š‘™š‘’ š‘œš‘“ š‘Ÿš‘œš‘”š‘Žš‘”š‘–š‘œš‘›š‘ ) = (360Ā°)/(17Ā°) = 21 (3Ā°)/17 Since, order of rotational symmetry is in fraction This is not possible

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