# Practical Practice

- Author:
- caydenja

## 1. Let's use our formula to confirm that the sum of interior angles in a hexagon is 720 degrees!

*Remember, the formula for the sum of the interior angles of a polygon is*

*, where*

*is the number of sides of a polygon*Since we have a hexagon, we know that there are

**6**sides, and so the sum of the interior angles of a hexagon can be found by

(**6**)

## 2. Here's a dodecagon (dough-deck-uh-gon)! It has 12 sides. Find the sum of the interior angles of a dodecagon!

## What should the sum of the interior angles of a dodecagon be?

*Remember that the formula we discovered was **, where ** is the number of sides of the polygon*

## This may look like a circle, but it is in fact a 65-gon! (That's a lot of sides!) After a certain point, we stop giving special names to polygons and just name them by how many sides they have.

## Find the sum of the interior angles of a 65-gon!

*You may need to bust out a calculator for this one*