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Author:
chen mingchuan
GeoGebra
New Resources
四邊形的特性
第八周作业
【案例】2013年安徽高考15题
球体的体积推导（优化版）
找出對稱軸
Discover Resources
堆剁蕊
可积准则
扇形面積公式2
分數化百分數(以方程計算，增潤項目)
圓與切線
Discover Topics
Combinatorics
Frequency Distribution
Definite Integral
Cylinder
Rotation