22-04-2020
Mathematics

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how many diagonals are in a 30-gon?

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DGBxBigxBrain DGBxBigxBrain

22-04-2020

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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