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數量與整體的相差百分率
Author:
GeoGebra Institute of Hong Kong
Topic:
Percentages
GeoGebra
New Resources
球體建築師
柱體建築師
兩位數加法
三位數除以一位數（二）
畫出對稱圖形
Discover Resources
龍騰4_1-1課隨1
總結
quiz 9.1 2(a)
Light reflected in ellipse
初三第十五讲真卷4-23题
Discover Topics
Tangent Line or Tangent
Ratios
Ellipse
Incircle or Inscribed Circle
Curve Sketching