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鐘面的時間（時和分）
Author:
Eduardo Neto
,
Anthony OR 柯志明
GeoGebra
柯志明 香港 GeoGebra 學院
New Resources
Area of a Triangle: Intuitive Discovery
Chapter-45: Curl detector
Discrete Fourier Transform: GeoGebra logo
Pairs of Numbers Given a Difference
Box and Whisker: Quick Construction Exercises
Discover Resources
Example 2
piecewiseTestggb44
Transformations By Navin 71
Trigonometry & the Unit Circle
Hyperbolic Square Construction
Discover Topics
Histogram
Expected Value
Similar Triangles
Correlation
Pythagoras or Pythagorean Theorem