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定理介紹：切線性質 | Tangent Properties
Author:
Ricky LI
,
chisunch1
GeoGebra
New Resources
兩位數除以一位數（一）
四邉形 (四年級) 教師版
算柱 (兩位數)
錐體建築師
【案例】2018年全国1卷理科12题
Discover Resources
動態面積展示
regular hexagon construction
HW1121505
三棱柱
比例中的定值問題(二)
Discover Topics
Natural Numbers
Incircle or Inscribed Circle
Fractions
Cone
Inequalities