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物件集2
Author:
Ching-Hui Chou
GeoGebra
New Resources
錐體建築師
四邊形的特性
画直线等分三角形的面积
第八周作业
球体的体积推导（优化版）
Discover Resources
Locus of mid-point of a variable chord of a circle.
旋转体的定义
銳角、直角和鈍角
曾卉君的作品
Illusion-内凹的正方形
Discover Topics
Arithmetic Operations
Set Theory
Logarithm
Integers
Circle