Question

how many diagonals are there in a polygon having 12 sides? a7 b8 c9d12
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Answer 1

Answer:

None from the options

None from the optionsThis answer is correct as same question is in my book

a) Formula for number of diagonals on an n= sided polygon=2n(n−3)

For n=12

Number of diagonals=212×(12−3)

=212×9

=54.

Mark me the Brainliest✌

Answer 2

no of daigonals= n(n-3)/2....

so no of diagonals of a polygon having 12 sides = 54