Question

I don't understand this, please help

Answer 1

Octagon:

Sum = 1080

One interior angle = 135

14-gon:

Sum = 2160

One interior angle = 154.286

20-gon:

Sum = 3240

One interior angle = 162

Explanation:

Sum of angles in a polygon -> sum of angles = (n – 2)180°

one interior angle = sum of angles/n

n = number of sides

one interior angle = sum of angles/n

Octagon:

Sum = 1080

One interior angle = 135

14-gon:

Sum = 2160

One interior angle = 154.286

20-gon:

Sum = 3240

One interior angle = 162

Answer 2

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