Exterior angle of a triangle

- 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 external angle of a triangle is always equal to the sum of the two interior opposite angles.

 

mrsK

 
Tip material
Foaie de lucru
Etichete
angle  angles  exterior-angle  geometry  theorem  triangles 
Grup Ţintă (Vârstă)
8 – 18
Limbă
English (Australia)
 
 
Versiune GeoGebra
4.4
Vizualizări
2411
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