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鐘面的時間(時和分)
Author:
Anthony OR 柯志明
GeoGebra
New Resources
What is an Isogonal Conjugate?
Poorly Drawn Parallelograms
Finding Average Rate of Change of a Function
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Parallelograms: Quick Investigation
Discover Resources
Circle center
Monedas de Buffon.
Area of the origami diamond decoration
Rotations by Reflections
Quiz: Adding Integers
Discover Topics
Symmetry
Limits
Pythagoras or Pythagorean Theorem
Triangles
Ratios