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欧拉线与九点圆
Author:
吕胜
GeoGebra
New Resources
拼砌四邊形
兩位數除以一位數（一）
【案例】2018年全国1卷理科12题
柱體建築師
GeoGebra笔记功能体验课件
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垂心即內心
Circumcentre
包含除法（整數或分數 ÷ 分數）
正方体展开图的副本
AMC
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Coordinates
Parabola
Complex Numbers
Subtraction
Trigonometry