Triangle Angle Sum Theorems
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?