What is the number of diagonal In a octagon
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20 diagonals
To find the total number of diagonals in a polygon, multiply the number of diagonals per vertex (n - 3) by the number of vertices, n, and divide by 2 (otherwise each diagonal is counted twice). Therefore, There are 20 diagonals in a regular octagon....
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Answer:
20 diagonals
an octagon has 8(8−3)/2 = 8×5/2 = 20 diagonals
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