Exterior Angle Theorem

The exterior angle theorem says that the size of an exterior angle at a vertex of a triangle equals the sum of the sizes of the interior angles at the other two vertices of the triangle.

 

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Resource Type
Activity
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<b> 
Target Group (Age)
11 – 14
Language
English (United Kingdom)
 
 
GeoGebra version
4.0
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4878
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