Missing Angle

From a @mrautomatic sketch. I kind of like that you can't see the third point always, but you can move the vertices to shrink the triangle without changing the angles.

 

John Golden

 
Material Type
Activity
Tags
angle  triangle  sum 
Target Group (Age)
11 – 14
Language
English (United States)
 
 
GeoGebra version
4.4
Views
563
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