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Summer Vacation!
Author:
Dave Van Leeuwen
In honor of the end of school in New York, I decided some cartwheeling around an ellipse is OK. (The earth is not a sphere! It is an ellipsoid!)
GeoGebra
New Resources
bewijs stelling van Pythagoras
Sum of Squares: Proof without Words
Nikmati Keunggulan Di Bandar Judi Terpercaya
Regular Star Polygons
רישום חופשי
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Einleitung_Zug.ggb
Straight line: y=mx+c
forum
Congruent curves?
Parallelogram, cyclic quadrilateral and angle bisector
Publicity: IKEA (Elias, DE)
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Centroid or Barycenter
Tree Diagrams
Orthocenter
Kite
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