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三角形的高與面積
Author:
+x sir
GeoGebra
New Resources
判斷球體
拼砌四邊形
三位數除以一位數（一）
異分母分數減法
兩位數除以一位數（二）
Discover Resources
Test1
雙曲線20160521
旋轉長方形
空间立方体
HKCEE 2009 Q17
Discover Topics
Pie Chart or Circle Chart
Binomial Distribution
Continuity
Power Functions
Vectors 2D (Two-Dimensional)