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厚會聚透鏡 Thick Convergent Lens
Author:
W.L. Wong, Albert
GeoGebra
New Resources
近似值：有效數字
判斷球體
直角坐標平面上的旋轉變換
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
花瓣曲線
學測105-9
reflectional symmetry_2
双动点变速运动
도수분포표-히스토그램 완성하기
Discover Topics
Interest Calculation
Sphere
Subtraction
Secant Line or Secant
Vectors