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Sum of a Triangle's Interior Angles.
Author:
Greydon Little
Topic:
Angles
Move the points around to change the interior angles and see if you notice something special about all triangles:)
GeoGebra
New Resources
Icosahedron1
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Quiz: Finding Average Rate of Change
alg2_05_05_01_slider_practice_flvs
Finding Average Rate of Change of a Function
Discover Resources
Kubinek-GeoGebra Project
utilisation_inequation
Complex Numbers: What's My Rule?
Geometry Project
grapher
Discover Topics
Combinatorics
Terms
Geometric Mean
Linear Functions
Upper and Lower Sum or Riemann Sum