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腳踏車輪圈
Author:
李春培
腳踏車輪圈
GeoGebra
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GeoGebra笔记功能体验课件
第八周作业
球體建築師
兩位數加法
【案例】2013年安徽高考15题
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正七邊形
反演的應用：鞋匠的小刀
三垂線定理
Light reflected in ellipse
小四_分數
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Hyperbola
Parametric Curves
LCM and GCD
Differential Equation
Logic