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Tangents from an External Point
Author:
Y.C.Lee
,
aamtinc
GeoGebra
New Resources
拼砌四邊形
三位數除以一位數（一）
兩組對邊相等的四邊形
畫出對稱圖形
三位數除以一位數（二）
Discover Resources
教學－橫切面
QP3.18
Copy of 固定周界的長方形的面積變化
軌跡練習1
展開圓面積 (講義版)的副本
Discover Topics
Random Variables
Quadrilaterals
Fractions
Linear Regression
Similarity Transformation or Similarity