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多邊形的切割與拼砌的副本
Author:
sui
,
spkwan
GeoGebra
modified by spkwan, uploaded 03 November 2011
GeoGebra
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第八周作业2
第八周作业3
双心四边形
比較五件物件的重量
盈利與虧蝕
Discover Resources
能量守恆
Quiz on Interior & Exterior Angles of Triangles 三角形內角和及外角：測驗
Cactest
四年級
Copy of 劉徽的「割圓術」
Discover Topics
Cube
Centroid or Barycenter
Orthocenter
Equilateral Triangles
Interest Calculation