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直线与圆相切
Author:
蔡永志
直线与圆相切
GeoGebra
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【案例】2018年全国1卷理科12题
三位數除以一位數（二）
拼砌四邊形
GeoGebra笔记功能体验课件
畫出對稱圖形
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高中數學函數圖形
面積的認識4
拋物線1 焦點法
線的面化
Copy of 折扣 例5
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Parabola
Secant Line or Secant
Vectors 2D (Two-Dimensional)
Straight Lines
Sphere