Question

Find the Sum of interior angles of a decagon .​

Answer 1

Step-by-step explanation:

formula is (n-2)180

decagon has 10 sides so

(10-2)180

1440

Answer 2

Step-by-step explanation:

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Formula to find the sum of interior angles

$(n - 2) \times 180 \\ (10 - 2) \times 180 \\ (8) \times 180 \\ 1440$

Therefore The sum of interior angles of a Decagon= 1440°

${1440}^{o}$

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