# geometry

posted by .

find the sum of the measures of the interior angles of a 13-gon

• geometry -

the sum of the interior angles of an n-gon is
180(n-2), so ....

## Similar Questions

1. ### math

find the sum of the measures of the intieior angles of each polygon. -hexagon -pentagon -quadrilateral -octagon -16-gon -27-gon The key is the sum of the measures. All of these figures have the same total number of degrees in their …
2. ### Geometry

What is the sum of the measures of the interior angles of a convex octagon?
3. ### geometry

If the sum of the measures of the interior angles of a convex n-gon is equal to the sum of the measures of the exterior angles, how many sides does the n-gon have?
4. ### Geometry

In Euclidean geometry, the sum of the measures of the interior anglesof a pentagon is 540o. Predict how the sum of the measures of the interior angles of a pentagon would be different in spherical geometry.
5. ### Math

In euclidean geometry, the sum of the measures of the interior angles of a pentagon is 540. predict how the sum of the interior angles of a pentagon would be different in spherical geometry
6. ### Geometry

Find the sum of the measures of the exterior angles of a convex 39-gon?
7. ### geometry

1. the sum of the interior angle measures of a convex dodecagon. 2. the measure of each interior angle of a regular 20-gon
8. ### Math

1. The measure of an interior angle of a regular polygon is 20 more than thrice the measure of its adjacent exterior angle. Find the number of sides of the polygon and its total number of diagonals. 2. Find the sum and difference between …
9. ### math

Find the measure of the interior angle in a regular polygon if the ratio of the sum of the measures of the interior angles to the sum of the measures of the exterior angels is 4
10. ### Geometry

Use less than, equal to, or greater than to complete this statement: The sum of the measures of the exterior angles of a regular 9-gon, one at each vertex, is ____ the sum of the measures of the exterior angles of a regular 6-gon, …

More Similar Questions