The interior angle and the exterior angle in a triangle

Move point C to see how the interior angle A and the exterior angle B_1 change.
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user2614 —

 
Resource Type
Activity
Tags
angle  exterior  lines  parallel  triangle 
Target Group (Age)
15 – 18
Language
English (United States)
 
 
GeoGebra version
4.2
Views
935
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License
CC-BY-SA, GeoGebra Terms of Use
 
 
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