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pffafian2016_1
Author:
Pfaffian
GeoGebra
New Resources
Constructing the Perpendicular Line Through a Point Not on the Line
Calendar Puzzle
Example of using color palette
探究長方形對角線上的正方形數目
Mean Value Theorem
Discover Resources
PR_INVTAN
Properties of a Parallelogram
reflection
Reflections in parallel lines
Inverse Tangent
Discover Topics
Poisson Distribution
Rational Numbers
Variance
Square
Solids or 3D Shapes