explain rotational symmetry
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A figure has rotational symmetry if it can be rotated by an angle between 0°0° and 360°360°so that the image coincides with the preimage.
The angle of rotational symmetry is the smallest angle for which the figure can be rotated to coincide with itself.
The order of symmetry is the number of times the figure coincides with itself as its rotates through 360°360° .
Example:
A regular hexagon has rotational symmetry. The angle of rotation is 60° 60° and the order of the rotational symmetry is 66 .
A scalene triangle does not have rotational symmetry.
The angle of rotational symmetry is the smallest angle for which the figure can be rotated to coincide with itself.
The order of symmetry is the number of times the figure coincides with itself as its rotates through 360°360° .
Example:
A regular hexagon has rotational symmetry. The angle of rotation is 60° 60° and the order of the rotational symmetry is 66 .
A scalene triangle does not have rotational symmetry.
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A shape has Rotational Symmetry when it still looks the same after a rotation (of less than one full turn).
This image can be rotated to three different positions and each look the same. It has Rotational Symmetry of Order 3
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