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

 
Tipo de recurso
Actividad
Etiquetas
angle  angles  exterior-angle  geometry  theorem  triangles 
Grupo destino (edad)
8 – 18
Idioma
English (Australia)
 
 
Versión de GeoGebra
4.4
Vistas
2589
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