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圓與切線
Author:
李春培
圓與切線
GeoGebra
New Resources
兩組對邊相等的四邊形
四邊形的特性
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
Discover Resources
Demo
橢圓的定義
第6题
circle
S0S1 柱體與椎體
Discover Topics
Rational Numbers
Interest Calculation
Translation
Isosceles Triangles
Circle