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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
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Blancmange curve (fractal)
Poorly Drawn Parallelograms 3
Poorly Drawn Parallelograms
Variation Theory Parallelogram Proofs
Discover Resources
Left and Right Hand Sums - Integral
Practice Graphing Slope and Y-intercept
Proportions with Parallel Lines
Rectangles-Diagonals -Triangles
Triangle Angle Bisector Theorem
Discover Topics
Hypothesis Testing
Geometric Mean
Volume
Indefinite Integral
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