SOLUTION: Total number of diagonals, sum of interior angles, sum of exterior angles, one interior angle, and one exterior angle if the number of sides is 12

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Question 873266: Total number of diagonals, sum of interior angles, sum of exterior angles, one interior angle, and one exterior angle if the number of sides is 12
Answer by Seutip(231) About Me  (Show Source):
You can put this solution on YOUR website!
Let:
n - be the number of sides
n = 12
*No. of diagonals
= %28n%28n-3%29%29%2F2
= %2812%2812-3%29%29%2F2
= %2812%2A9%29%2F2
=54 diagonals
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*Sum of Interior Angles
= %28n-2%29%2A180
= %2812-2%29%2A180
= 10%2A180
= 1800 degrees
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*Sum of Exterior Angles
= 360%2Fn
= 360%2F12
= 30 degrees is an example and the sum is 360 degrees
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*Example of Interior
= Sum of Interior Angles/n
= 1800%2F12
= 150 degrees
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Hope I help.
Steffy