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GeoGebra Lesson
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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
Earth with coastline
算柱 (兩位數)
美國國旗 (Claude 版)
Nested spiral octagon
近似值：有效數字
Discover Resources
邊長與三角形（二）
二維碰撞
test
Rolling Square
等比数列计算练习
Discover Topics
Conic Sections
Tangent Function
Translation
Boxplot
Rectangle