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Introduce Tangent Ratio
Author:
VCChung
GeoGebra
New Resources
兩組對邊相等的四邊形
拼砌四邊形
錐體建築師
【案例】圆柱体内放置一个大球六个小球
三位數除以一位數（二）
Discover Resources
Incentre
包絡線
兩圓動點中點軌跡
earth
鉛筆畫圓
Discover Topics
Inequalities
Unit Circle
Multiplication
Bar Chart or Bar Graph
Arithmetic