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椭圆的定义
Author:
jjx01
Topic:
Conic Sections
,
Ellipse
GeoGebra
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【案例】2013年安徽高考15题
兩位數加法
GeoGebra笔记功能体验课件
拼砌四邊形
異分母分數減法
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proof10 曹詠鈞
工作紙題2
學習活動三聯立不等式的圖形
三角函數圖形（全） 的複本
Twghmkc_運動與我
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Tangent Line or Tangent
Vectors 2D (Two-Dimensional)
Parallelogram
LCM and GCD
Angles