# Sum of Interior Angles (Pentagons)

## Triangles

## Triangles

What is the sum of the triangle's interior angles?

## Triangles: Move point B to (4, 4)

## After you moved Point B to the coordinates (4, 4),

What is the new sum of the interior angles?

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## Creating a Quadrilateral

## Creating a Quadrilateral

A quadrilateral is made up of __ triangles

## Creating a Quadrilateral

What did you notice about the two triangles?

## Based on the answer above...

What do you think is the sum of the interior angles of a quadrilateral?

## Creating a Pentagon

## Creating a Pentagon

How many triangles make up the pentagon?

## Pentagons: Based on your previous answer...

What is the sum of the interior angles of a pentagon? (Answer in a complete sentence)