Exterior Angle of a Triangle

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Drag the two sliders to transform the angle measures for angle A and B of the triangle. Compare the sum of these angles to the exterior angle at C in the triangle. Is this true for any triangle ABC?

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Anthony DiLaura — November 29, 2015 - 11:27 AM

Resource Type: Activity
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Target Group (Age): 9 – 15
Language: English

Views: 15217

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License: CC-BY-SA, GeoGebra Terms of Use
Derived Resources: Untitled Applet
Shared by Laura Sorrentino; Show More…; Untitled Applet
Shared by BYU Math Course Design; Kala - Relationship: Exterior & Interior Angles
Shared by Kuruman GeoGebra Intervention Programme

Exterior Angle of a Triangle

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