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A shape looks the same after turns of 90°, 180° and 270°.
Which of these is the BEST description of its symmetry?

Class 7Rotational SymmetryGeometry
  • Aorder 4, angle of rotation 90°
  • Border 3, angle of rotation 120°
  • Corder 2, angle of rotation 180°
  • Dorder 4, angle of rotation 270°

Step-by-Step Solution

It repeats every 90°, so the angle of rotation is 90° and the order is 360°/90° = 4.
Answer: A) order 4, angle of rotation 90°

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