6.2. Exterior Angles in Convex Polygons http://www.ck12.org
6.2 Exterior Angles in Convex Polygons
Here you’ll learn the Exterior Angle Sum Theorem that states that the exterior angles of a polygon always add up to
360 ◦.
What if you were given a twelve-sided regular polygon? How could you determine the measure of each of its exterior
angles? After completing this Concept, you’ll be able to use the Exterior Angle Sum Theorem to solve problems
like this one.
Watch This
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/52576CK-12 Foundation: Chapter6ExteriorAnglesinConvexPolygonsA
Watch the second half of this video.
MEDIA
Click image to the left for use the URL below.
URL: http://www.ck12.org/flx/render/embeddedobject/1267James Sousa: Angles of Convex Polygons
Guidance
Recall that anexterior angleis an angle on the outside of a polygon and is formed by extending a side of the
polygon.