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月有阴晴圆缺
Author:
林峰
GeoGebra
New Resources
圓的基本性質
探究三角形的全等條件
祖冲之的期望：内棋与外棋
常见四边形是否是双心四边形
龙形曲线-分形龙
Discover Resources
整數或分數÷分數_ 工作紙（一）_題1c
方形地毯
初中数学模型
作线段和角
y=ax^2的繪圖
Discover Topics
Cuboid
Right Triangles
Similar Triangles
Special Points
Multiplication