Exterior Angles of Polygons (Updated with Negative Angles)

This applet update of the original applet [url]434 Exterior Angles of Polygons[/url] with negative exterior angles so that the exterior angle sum is still 360° when the polygon becomes concave. It is suggested that teacher only uses this applet AFTER he/she has a thorough discussion with their students about the notion of negative angles USING THE ORIGINAL APPLET. Anthony Or. GeoGebra Institute of Hong Kong.

 

Anthony OR 柯志明

 
Resource Type
Activity
Tags
angle  exterior  geometry  polygon  polygons  proof 
Target Group (Age)
11 – 14
Language
English (United Kingdom)
 
 
GeoGebra version
4.2
Views
3198
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