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Question
For the following picture, find the number of lines of symmetry and also find the order of rotation.
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Solution

Number of lines of symmetry is 1.
Order of rotation is 0, because it is an isosceles triangle
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| `1/3` turn | `1/6` turn | |
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Order of rotational symmetry of
is ______.
Order of rotational symmetry of a rhombus is four.
Order of rotational symmetry of a semi-circle is two.
Tell whether the figure has rotational symmetry. Write yes or no.





