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Author:
marina.wandalsen
GeoGebra
New Resources
Variation Theory Parallelogram Proofs
Exploring Simple Loci 探究簡單軌跡
Exploring the Derivative of an Exponential Function
Parallelograms: Quick Investigation
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Discover Resources
Right triangles and prisms - Exploration
Kite
Triangle Angle Sum
Four color challenge
Printable Puzzles
Discover Topics
Rotation
Cylinder
Complex Numbers
Cone
Pythagoras or Pythagorean Theorem