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判斷球體（汽球）
Author:
Martin Fong
GeoGebra
New Resources
Exploring Dilations
Cartesian to Polar Graphs
Pi Day Things
Radian Angles
Dilations Part 3: What Do You Notice?
Discover Resources
Pulley
gs effects of coefficients in a quadratic function
horse tied to a barn
Geometric Figures
group 4 89x
Discover Topics
Plane Figures or Shapes
Sequences and Series
Geometric Transformations
Frequency Distribution
Integral Calculus