Sum of angles of a triangle: the proof

Very classical picture. Based in part on the work by Andy Talmadge.

 

Ilya V. Schurov

 
Tipo de recurso
Actividad
Etiquetas
angle  parallel-lines  triangle-angle-sum 
Grupo destino (edad)
6 – 19+
Idioma
English
 
 
Versión de GeoGebra
5.0
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1777
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