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幾何明珠2-4
Author:
bigbirdjack
GeoGebra
New Resources
比較五件物件的重量
第八周作业2
第八周作业3
折扣
科氏力 (Coriolis Force)
Discover Resources
平行四邊形與三角形
欢度春节（灯笼）
分數
trigonometry1
P6 數學 立體的截面
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Geometry
Equilateral Triangles
Quadrilaterals
General Quadrilateral
Geometric Transformations