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几何体
Author:
DongHai Zhang
预习相关知识
GeoGebra
New Resources
第八周作业
異分母分數減法
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
球體建築師
Discover Resources
Ratio of angles at the centre and the length of the arcs.
小數在數線上的位置
Escher 階梯
Example 5
作线段和角
Discover Topics
Square
Symmetry
Complex Numbers
Indefinite Integral
Differential Equation