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Euclid's Proof Without Words

Author:Roger Gemberling, Steve Phelps
Drag the points. Drag the slider. What do you notice? What does this prove? How does it prove this?

New Resources

  • Fractal Tétraèdre. Dilatation -1/2 centre triangles
  • Slope Between 2 Points (Phase 2)
  • Parallelogram Anatomy
  • Regular Polygons and Equivalent Triangles
  • Rectangle Construction Template (V2)

Discover Resources

  • Finding the Matrix of a Linear Transformation
  • Untitled
  • Surface Area Expressions
  • Exploring slope-intercept form
  • Exterior Angles of Triangles

Discover Topics

  • Hypergeometric Distribution
  • Perimeter
  • Straight Lines
  • Stochastic Process or Random Process
  • Interest Calculation
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