What is the angle of rotation of this regular decagon? What is the measure of an interior angle?
1 answer:
A decagon has 10 sides. If the polygon is symmetrical, the angle of rotation is given by the following equation:
360 / (number of sides)
Therefore,
360 = 10 = 36.
The interior angles are determined by the following equation:
180 - (angle of rotation)
Therefore,
180 - 36 = 144
The answer is A.
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