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Petr–Douglas–Neumann
Author:
Ron van den Burg
Topic:
Geometry
GeoGebra
New Resources
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Variation Theory Parallelogram Proofs
Icosahedron1
Tutorial: Create lists of numbers and objects
Exploring the Derivative of a Quadratic Function
Discover Resources
Three Points Determine a Circle
Hennis Opgave
Interior & Exterior Angles of Triangles
Exploring Area and Perimeter
Garis Bilangan
Discover Topics
Sine
Geometric Transformations
Translation
Integers
Reflection