Question

Help please

Determine the sum of the measures of the interior angles of a dodecagon (12-sided polygon).

540°

360°

1,800°

2,160°

Answer 1

Option C) 1,800°

Explanation:

To Find : Interior Angles of a Decagon

In order to find interior angles of any polygon we usually use the formula

(n-2)x180

Over Here it is a 12 sided polygon

So,

(12-2)x180

10x180

1800

Hence the interior angles of a decagon is 1800°

Answer 2

Below

Explanation:

Formula for sum of interior angles of a n - gon

(n-2) * 180

for this 12 sided 'gon

(12-2) * 180 = 1800°

( and for a 'regular' dodecagon each would be 1800/12 = 150°