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Outline
triangle sum theorem
The angles of a triangle always sum to 180 degrees.
triangle sum theorem
Author:
Becky.Taylor
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The angles of a triangle always sum to 180 degrees.
New Resources
Poorly Drawn Parallelograms 3
探究由平行線和截線所成的角
What is an Isogonal Conjugate?
Droste effect
alg2_05_05_01_applet_exp_2_flvs
Discover Resources
quadrat-in-ellipse
Step8
Clock Face Arc Length
Rhombus in Action!
Drawing Triangles
Discover Topics
Geometric Transformations
Vectors 2D (Two-Dimensional)
Cylinder
Derivative
Plane Figures or Shapes