# Cw 9

## Number of Angles

How many angels do you see in this pentagon?

## Sum of Angles

Given that the sum of a regular pentagon is 540, how can you figure out the measure of each angle?

## Equation

What would be the equation to find the angles given the sum?

## Equation

What would be the equation to find the angles given the sum?

## Angles add to 540 no matter what point you move

## Interior Angle Rule

To find the sum of each interior angle of any polygon, the equation will be

## Solve for angles

If a polygons has n sides, what will the number of triangles be along with the sum for the following: n=3 n=4 n=5 n=6

## Error Analysis

Describe and correct the error in finding the sum of the interior angle measures of a 13-gon: