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12 March, 17:25

How many sides do 1980 have

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  1. 12 March, 18:25
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    13 sides

    Step-by-step explanation:

    1980 = (n - 2) * 180 Formula for number of sides

    n - 2 = 1980/180 Divide both sides by 180

    n - 2 = 11

    + 2 + 2 Add 2 to both sides

    n = 13
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