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"proof" of the triangle sum theorem
Author:
Zawierucha
,
Duane Habecker
This applet shows that the sum of the interior angles for ANY triangle is 180°.
GeoGebra
New Resources
Building Trapezoids with Set Areas
Parallelogram Anatomy
Pathway to Proof: Triangle Angles
Publish app "Public" test
Untitled
Discover Resources
LSRL
LP Activity
Untitled
triangle3
Discover Topics
Random Variables
Combinatorics
Circumcircle or Circumscribed Circle
Incircle or Inscribed Circle
Volume