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Sum of Interior Angles of a Triangle
Author:
Eric Karnowski
Topic:
Angles
Related Topics
Congruence
Conic Sections
Constructions
Coordinates
Fractal Geometry
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Animation of Lines with Square and Rectangle (Multi)
Yr 12 Methods
Proportions in similar triangles
Tom's Journey to School
Tranformation
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Upper and Lower Sum or Riemann Sum
Limits
Square
Pythagoras or Pythagorean Theorem
Cosine