Question

sum of interier angle of polygon with side n sides is given by
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Answer 1

Your Answer:

(n-2) x 180°

All the formulas:

For each exterior angle:  360°/n

For each interior angle: 180° - (each exterior angle)

For sum of all the interior angles: (n-2) x 180°

For sum of all the exterior angles: (sum of all interior angles)/n

For finding the number of diagonals: n(n-3)/2

Hope it helps you!