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圆链的反演
Author:
孟宝兴
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
拼砌四邊形
四邉形 (四年級) 教師版
直角坐標平面上的旋轉變換
三位數除以一位數（一）
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百分數：折扣、盈利與虧損
因數的判別
congruent (AAA)
同心六邊形
Copy of 阿波羅尼斯圓
Discover Topics
Logic
Dilation
Vectors 3D (Three-Dimensional)
Geometric Transformations
Symmetry