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圓外切四邊形對邊和等長
Author:
謝易達
GeoGebra
New Resources
錐體建築師
兩位數除以一位數（二）
球體建築師
拼砌四邊形
兩位數除以一位數（一）
Discover Resources
Locus 軌跡(5T)
Simulation of the uniform variable linear motion with GeoGebra
Graph of Exponential function
重心
固定三角形的條件−題1的副本
Discover Topics
Congruence
Secant Line or Secant
LCM and GCD
Distributions
Area