Question

the interior angle sum of a regular 13 gon polygon
1980
1260
1800
1440

Answer 1

Answer:

1980 degrees

Step-by-step explanation:

As the formula to calculate the sum of all the interior angle is (n-2)*180......where n is the number of sides of the polygon

Answer 2

Answer:

1980

Step-by-step explanation:

in a regular polygon

ext.angle = 360/no.of sides

ext.angle = 360/13 = 27.69

since, int.angle + ext.angle = 180

int.angle = 180 - 27.69 = 152.31

sum of all int.angle = 152.31 × 13 = 1980