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平行四邊形有甚麼特性？
Author:
Anthony OR 柯志明
Topic:
Parallelogram
English version:
http://ggbtu.be/m79826
GeoGebra
New Resources
sanjiaohanshu
第八周作业
找出對稱軸
Earth with coastline
美國國旗 (Claude 版)
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mario coin
translation
長方形分割
gltyz 直角三角形旋轉體
基础知识
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LCM and GCD
Arithmetic Operations
Fractal Geometry
Similar Triangles
Area