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Proof Without Words
Author:
Steve Phelps
Topic:
Pythagoras or Pythagorean Theorem
Drag the points. Drag the slider. What do you notice? What does this prove? How does this prove?
GeoGebra
New Resources
Introduction
Ellipse, Hyperbola and Circle as Envelopes
Spinning cube - Belt Trick
Cross Product in 2D and 3D
Ellipse as Envelope - Correspondence Method
Discover Resources
EXPO!!!
Projective Plane Model: Conics
Slope: Intuitive Intro and Exploration
Manipulating Standard Form
Triangle Angle Sum Theorem
Discover Topics
Planes
Upper and Lower Sum or Riemann Sum
Geometric Distribution
Conditional Probability
Tangent Line or Tangent