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長方形
Author:
Yip Chi Wai
GeoGebra
New Resources
異分母分數減法
兩位數除以一位數（二）
三位數除以一位數（二）
柱體建築師
【案例】2018年全国1卷理科12题
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games
T4 Geobra
Mobius 變換 (2)
EX3.18
試算表的應用
Discover Topics
Rotation
Scalene Triangles
Division
Combinatorics
Polygons