# Triangle Angle Sum Theorems

- Author:
- Rebecca Layman

## Question 1:

When working with the triangle's interior angles, did the transformations
change the measures of the blue or green angles?

## Question 2:

Try to move the triangle's angles to create a new triangle.
What happens to the angles?

## Question 3:

Move the angles of your triangle again. Slide the bar one more time all the way to the right.
What do you notice?

## Question 4:

What is the angle measure of a line?

## Question 5:

From your observations, what is the sum of the measures of the interior angles of

*any triangle?*