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内凹的正方形
Author:
叶明杰
GeoGebra
New Resources
拼砌四邊形
兩組對邊相等的四邊形
判斷球體
異分母分數減法
兩位數加法
Discover Resources
http://www.qsir.org/?p=8853
兩條數線比較
S3 Area and Volume
指對數圖形與交點個數
內心
Discover Topics
Logarithm
Area
Cone
Quadrilaterals
Division