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公切線長度的計算
Author:
曾己泉
Topic:
Circle
外公切線與內公切線的描述及計算
GeoGebra
New Resources
兩組對邊相等的四邊形
美國國旗 (Codex 版)
近似值：有效數字
長方體平面投影 (Codex版)
畫出對稱圖形
Discover Resources
練習1
垂心軌跡
Congruent and Similarity
四邊形外接正方形
等距曲线ggb作图法
Discover Topics
Tangent Function
Differential Calculus
Mode
Hyperbola
Statistics