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三角形有向面積
Author:
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
判斷球體
拼砌四邊形
錐體建築師
柱體建築師
三位數除以一位數（二）
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指數與對數
圖形的繪製(8)---圖形的搬移(畢氏定理)
sin(x) 的函數圖形的副本
S3 Ex4.3 Q03(3D圖)
多邊形的面積
Discover Topics
Vectors 2D (Two-Dimensional)
Geometric Transformations
Cone
Rational Numbers
Secant Line or Secant