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    Question

    A regular polygon has an interior angle of 144°. How

    many sides does the polygon have?
    A 8 Correct Answer Incorrect Answer
    B 10 Correct Answer Incorrect Answer
    C 12 Correct Answer Incorrect Answer
    D 15 Correct Answer Incorrect Answer

    Solution

    The formula for the interior angle of a regular polygon with n sides is: Interior angle = [(n - 2) * 180] / n. 144 = [(n - 2) * 180] / n. 144n = 180n - 360 36n = 360 n = 10.

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