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兩圓關係與公切線
Author:
謝易達
GeoGebra
New Resources
柱體建築師
算柱 (兩位數)
兩位數除以一位數（二）
第八周作业
兩組對邊相等和有直角的四邊形
Discover Resources
前景圖、背景圖
各級曾參與義工活動的人數
直線與平面關係
Angle between line and plane
爱奇艺
Discover Topics
Histogram
Stochastic Process or Random Process
Interest Calculation
Solids or 3D Shapes
Logic