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正方形
Author:
Yip Chi Wai
Topic:
Square
GeoGebra
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三位數除以一位數（一）
近似值：有效數字
【案例】2018年全国1卷理科12题
四邊形的特性
GeoGebra笔记功能体验课件
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教學－與直線有關的角
平均線
Copy of 圖四
旁心
繪本
Discover Topics
Differential Equation
Differential Calculus
Linear Functions
Right Triangles
Inequalities