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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
Variation Theory Parallelogram Proofs
Explore the invariant lines of matrix {{-2,5},{6,-9}}
Dodecahedron
Poorly Drawn Parallelograms 2
Poorly Drawn Parallelograms 3
Discover Resources
(TAST) Triangle Angle Sum Theorem
Torricelli configuration
CCSS High School: Geometry (Congruence) Volume 1
AM 2013 P2 Q11
Difference of Cubes
Discover Topics
Fractions
Multiplication
Subtraction
Centroid or Barycenter
Orthocenter