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正二十面體
Author:
侯杰材
正二十面體
GeoGebra
New Resources
兩位數加法
【案例】2018年全国1卷理科12题
找出對稱軸
四邊形的特性
兩位數除以一位數（二）
Discover Resources
救生員的職責
Centroid
除法Q5
拋物線4--平行四邊形法
展開圓面積 (講義版)的副本
Discover Topics
Statistics
Algebra
Scatter Plot
Perimeter
Polygons