Creation of this resource was inspired by a [url=http://www.gogeometry.com/problem/p307_nonagon_midpoint_angle_side.htm]problem[/url] posted by [url=https://twitter.com/gogeometry]Antonio Gutierrez[/url] (GoGeometry). [br][br]You can move the [b]LARGE WHITE POINTS[/b] anywhere you'd like at any time. [br]Note: the [b][color=#ff00ff]pink point[/color][/b] INSIDE this polygon is the center of the (soon-to-appear) circle. [br][br]After interacting with this applet for a few minutes, please answer the questions that follow.
What is the measure of the [b][color=#ff00ff]pink angle[/color][/b]? Explain how the applet suggests this is true.
How can we prove the measure of the [b][color=#ff00ff]pink angle[/color] [/b]IS what it is?
How can we formally prove the angle on the right side also has a measure equal to the measure of the [b][color=#ff00ff]pink angle[/color][/b]?