Internal angle sum of triangles

- Drag the vertices A, B, C to create different types of triangles. - Use the sliders to create copies of the same triangle and prove that the internal angles always add up to 180 degrees.
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mrsK —

 
Resource Type
Activity
Tags
angle  angles  geometry  triangles 
Target Group (Age)
8 – 18
Language
English (Australia)
 
 
GeoGebra version
4.4
Views
1001
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License
CC-BY-SA, GeoGebra Terms of Use
 
 
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