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Question
Which of the following has no rotational symmetry?
Which of the following has no rotational symmetry?
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Solution
The correct options are
B
C 
- A shape has rotational symmetry when it still looks the same after a rotation of less than one full turn.
From the given options, a parallelogram has rotational symmetry of the order 2. An equilateral triangle has rotational symmetry of order 3. An arrow and right-angled triangle with different side lengths do not have any rotational symmetry.
B
C
- A shape has rotational symmetry when it still looks the same after a rotation of less than one full turn.
From the given options, a parallelogram has rotational symmetry of the order 2. An equilateral triangle has rotational symmetry of order 3. An arrow and right-angled triangle with different side lengths do not have any rotational symmetry.
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