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Proof Without Words
Author:
Steve Phelps
Drag the green and blue points. Drag the slider. What does this prove? How does it prove it?
GeoGebra
New Resources
Science Park 1
The Cosine Formula - Proof Without Words
Untitled
Rolling Triangle
Positive and Negative Space
Discover Resources
CCSS High School: Geometry (Challenges)
left-hand sum
Parabola 1
Untitled
I AM 178
Discover Topics
Trigonometric Functions
Intersection
Incircle or Inscribed Circle
Integral Calculus
Hyperbola