The pentagon rotates 216 degrees clockwise about its center so that the vertex at B is moved to D
How to determine the angle of rotation?
The angle at the vertex of a pentagon is:
x = 108 degrees
In a clockwise direction, there are 2 points from point B to point D.
This means that the angle of rotation is:
Rotation = Number of points * Vertex angle
So, we have:
Rotation = 2 * 108
Evaluate
Rotation = 216
Hence, the pentagon rotates 216 degrees
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