No, the windmill will not look the same if rotated by an angle less than 90°. It requires a rotation of 90° or more to match its original position due to its rotational symmetry.
Class 6 Mathematics Ganita Prakash Symmetry
Class 6 Mathematics Chapter 9 Symmetry question answer
The windmill, like other shapes with rotational symmetry, will not look identical if rotated by an angle less than 90°. It has rotational symmetry of 90°, meaning it will align with its original position only after a 90° rotation or any other multiple of 90° (i.e., 180°, 270°, and 360°). This property makes the windmill look the same at specific rotational intervals, but not at intermediate angles like 45° or less.
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