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線性組合的副本
Author:
xiaodandan
,
羅驥韡 (Pegasus Roe)
GeoGebra
New Resources
四邊形的特性
三位數除以一位數（二）
錐體建築師
兩組對邊相等和有直角的四邊形
第八周作业
Discover Resources
北區模考非選第二題 (2014.03.06)
旋轉動畫
rotational symmetry_4
圓在直線上滾動
題 3 的複本
Discover Topics
Planes
Ellipse
Geometric Transformations
General Quadrilateral
Complex Numbers