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數學解題2
Author:
shan chun
GeoGebra
New Resources
三位數除以一位數（一）
【案例】2018年全国1卷理科12题
兩位數除以一位數（一）
判斷球體
算柱 (兩位數)
Discover Resources
平行四邊形面積教材二
Sequence指令練習(包絡線：橢圓)
三角形重心軌跡(動點在三圓上)
定義篇
極線對偶定理 / polar duality theorem 的複本
Discover Topics
Planes
Quadratic Functions
Difference and Slope
Diagrams
Mathematics