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Meena claims that a shape with rotational symmetry of order 6 must look the same after a turn of 120°.
Is Meena correct, and what is the angle she should have used for the FIRST repeat?

Class 7Rotational SymmetryGeometry
  • AShe is partly right; 60° is the first repeat, and 120° also works
  • BShe is fully correct; 120° is the first repeat
  • CShe is wrong; the first repeat is at 90°
  • DShe is wrong; the shape never repeats below 180°

Step-by-Step Solution

Order 6 gives first repeat at 360°/6 = 60°. Multiples (120°, 180°, ...) also work, so 120° works but is not the first.
Answer: A) She is partly right; 60° is the first repeat, and 120° also works

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