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GeoGebra
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異分母分數減法
GeoGebra笔记功能体验课件
三位數除以一位數(二)
四邊形的特性
【案例】2018年全国1卷理科12题
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阿波羅尼亞圓
判斷球體 5
Apollonius Problem gergonne 0
Origami-Trisect An Angle
Graph of Tangent