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ie 8
Author:
LAM YU SANG
GeoGebra
New Resources
錐體建築師
找出對稱軸
兩位數除以一位數（二）
四邊形的特性
兩組對邊相等的四邊形
Discover Resources
圓與切線
rectangle construction
中線定理(阿波羅尼奧斯)定理
約分
選擇合適的「單位」
Discover Topics
Fractal Geometry
Upper and Lower Sum or Riemann Sum
Vectors 2D (Two-Dimensional)
Tangent Function
Integral Calculus