JHolm Sum of Exterior Angles of a Polygon
Explore the sum of exterior angles of a polygon in this activity.
Putting It All Together
Answer these open ended questions on your own or with others to form deeper math connections.
When you move the slider to animate, what shape is formed by the exterior angles?
How many degrees are in a circle?
If all of the exterior angles form the shape of a circle, what is the sum of the measures of the exterior angles of a polygon?
Will the sum of the measures of the exterior angles of a polygon always be the same?
Does this video confirm your conclusion?
After watching the video, can you predict what the measure of ONE external angle would be of an Octagon? Decagon? Do-decagon?