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圓與切線
Author:
李春培
圓與切線
GeoGebra
New Resources
三位數除以一位數（二）
拼砌四邊形
兩位數除以一位數（二）
異分母分數減法
兩組對邊相等和有直角的四邊形
Discover Resources
七巧板奔人
Slope 斜率 - 概念及定義 (3)
F.3 Q5 BQ
空間貝氏曲線
等線段作圖
Discover Topics
Scatter Plot
Percentages
Correlation
Sequences and Series
Incircle or Inscribed Circle