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28 July, 20:21

How many diagonals are in a 30-gon?

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  1. 28 July, 20:31
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    Answer:405 diagonals

    Step-by-step explanation:

    the formula is n (n-3) / 2 n being how many sides

    30 (30-3) / 2=30 (27) / 2=15*27=

    405 diagonals
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