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Tangents from an External Point
Author:
Y.C.Lee
,
aamtinc
GeoGebra
New Resources
算柱 (兩位數)
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
Discover Resources
Locus 軌跡(2T)
推移（y 方向）
平移旋轉對稱
圓錐截痕
存款試算工具
Discover Topics
Calculus
Sine
Integral Calculus
Similarity Transformation or Similarity
Tree Diagrams