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橢圓軌跡
Author:
Ching-Hui Chou
GeoGebra
New Resources
判斷球體
【案例】2018年全国1卷理科12题
球体的体积推导
三位數除以一位數（一）
兩組對邊相等的四邊形
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string art
Copy of 十行表
根據百分率找數量（一）: 例2的副本
昆三中课堂试用1
正方体的三视图
Discover Topics
Piecewise Functions
Vectors
Centroid or Barycenter
Sine
Tree Diagrams