###### Asked in Math and ArithmeticAlgebraGeometry

Math and Arithmetic

Algebra

Geometry

# How do you find the sum of the interior of a dodecagon?

## Answer

###### Wiki User

###### May 14, 2012 2:37PM

There are two ways of doing it I'll tell you the easiest, you have to draw your dodecagon and then pick one specific corner and draw straight lines out to each of the other corners from this point and then Count how many triangles there are and times it by 180

## Related Questions

###### Asked in Geometry

### Sum of the angles of dodecagon?

###### Asked in Math and Arithmetic, Algebra, Geometry

### What is the interior angle of a regular dodecagon?

Each interior angle measures 144 degrees
* * * * *
No! The sum of the exterior angles of a polygon is always 360
degrees - no matter how many sides, So the extrior angle of a
regular dodecagon is 360/12 = 30 degrees. Since the interior and
exterior angles are supplementary, the interior angle is 180-30 =
150 degrees.