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平行線法
Author:
chen mingchuan
GeoGebra
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画直线等分三角形的面积
【案例】2018年全国1卷理科12题
GeoGebra笔记功能体验课件
三位數除以一位數（一）
找出對稱軸
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拋物線頂點軌跡圖
DSE Circle-ACT01B Relationship between Centre and Chord
圖形
Magic Matches
算盘
Discover Topics
Fractions
Linear Regression
Probability
Continuity
Rotation