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Tangent of a Circle 圓的切線
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
柱體建築師
球體建築師
錐體建築師
sanjiaohanshu
三位數除以一位數（一）
Discover Resources
Prism and Cylinder 3
四角柱體（長方體）的截面
信心水準與信賴區間的副本
兩位數除兩位數(例子一)
柱體建築師 1 的複本
Discover Topics
Rectangle
Similarity Transformation or Similarity
Logic
Pyramid
Kite