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test geogebra 5.0
Author:
Ho-Kai Chen
only testing...
GeoGebra
New Resources
兩位數加法
三位數除以一位數（二）
四邉形 (四年級) 教師版
兩組對邊相等和有直角的四邊形
錐體建築師
Discover Resources
平行四邊形的面積
Nets of a square pyramid
http://www.qsir.org/?p=8853
謝爾賓斯基三角形(Sierpinsky)
包絡線1
Discover Topics
Functions
Function Graph
Prism
Parallelogram
Percentages