To describe all the rotational symmetries of the figure.
Answer to Problem 7CE
The figureX has 4 rotational symmetry.
Explanation of Solution
Given information:
The figure of X .
The figure ofX has the four rotational symmetry. Each symmetry has center O and rotates the figure onto itself. Note that
The identity mapping always maps a figure onto itself, we usually include the identity when listing the symmetries of a figure.
Therefore, the figure X has 4 rotational symmetry.
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