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椭圆的定义
Author:
梁航宇
GeoGebra
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【案例】圆柱体内放置一个大球六个小球
算柱 (兩位數)
GeoGebra笔记功能体验课件
兩位數加法
三位數除以一位數（一）
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ｔｅｓｔ
gjc090a23 鈍角三角形外心
同位角__水平平行綫
雙曲線1-焦點法
如何平移逼近三点的抛物线
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Parallelogram
Similar Triangles
Statistical Characteristics
Volume
Solids or 3D Shapes