Find the measures of an interior angle and exterior angle of a regular dodecagon

Total interior angle is 1800°

Total exterior angle is 360°

Step-by-step explanation:

The total number of exterior angle of any polygon(n-sided shape ) is always 360°.

Formula for total interior angle is (n-2)180°

A duodecagon is a shape with 12 sides.

Therefore n is 12.

Substituting n for 12;

Total interior angle = (12-2)180°

=(10)180°

=1800°

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.