Adjustable Triangle: Exterior angle

Use this manipulative triangle to practice calculating missing exterior angles. First try hiding only the exterior angle Next only showing two angles. Can you still find the missing angles? What rules do you need to know to work these out?

 

adamgonza

 
Materialtyp
Aktivität
Tags
angle  calculate  degree  exterior-angle  triangle 
Zielgruppe (Alter)
11 – 14
Sprache
English (United Kingdom)
 
 
GeoGebra Version
3.2
Ansichten
1792
Kontaktiere Autor des Materials
 
 
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