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Which of the following letters does not have rotational symmetry?

  • A.H
  • B.O
  • C.E
  • D.N

Answer: C

The letter without rotational symmetry is E.

A figure has rotational symmetry if it looks the same after a rotation of less than a full turn. E only looks the same after a complete 360° turn, so it has no rotational symmetry (it has only a horizontal line of symmetry).

H and N each look the same after a half turn of 180°, so both have rotational symmetry of order 2. O, drawn as a circle or an oval, looks the same after a half turn as well. So H, O and N are all wrong answers.

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