2015 AMC 12B Problem 7
Below is the professionally curated solution for Problem 7 of the 2015 AMC 12B, from LIVE by Po-Shen Loh. You can also try the full timed exam, view all 2015 AMC 12B solutions, or check the answer key.
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Difficulty rating: 1260
7.
A regular -gon has lines of symmetry, and the smallest positive angle for which it has rotational symmetry is degrees. What is
Solution:
A regular -gon has lines of symmetry, and its smallest angle of rotational symmetry is degrees.
Then
Thus, the correct answer is D.
Problem 7 in Other Years
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