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菱形十二面體
Author:
林明頡
GeoGebra
New Resources
盈利與虧蝕
第八周作业2
双心四边形
折扣
比較五件物件的重量
Discover Resources
ray tracing of intraocular eye
光的折射（光线自右下向左上）
圓柱截痕
Copy of 梭哈的機率
三年級除法(二)：一位數除兩位數
Discover Topics
Cylinder
Tangent Function
Right Triangles
Continuity
Prism