vstellPengnanulekh
vstellPengnanulekh vstellPengnanulekh
  • 15-06-2016
  • Mathematics
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If a 12-sided regular polygon rotates about its center, at which angle of rotation will the image of the polygon coincide with the preimage?

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HomertheGenius
HomertheGenius HomertheGenius
  • 27-06-2016
Central angle of a regular polygon:
Ф = 360° : n. 
If n=12:  Ф = 360° : 12 = 30°
At the angle of rotation Ф = 30°  the image of the polygon will coincide with the preimage.
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