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Right Triangles in a Circle 圓內的直角三角形
Author:
Alex CHIK
GeoGebra
GeoGebra 互動數學教室
http://www.geogebra.hk
New Resources
双心四边形
比較五件物件的重量
多邊形的面積
直線的斜率
撒针估算面积实验
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形心
抛物线的参数方程
七巧板
Copy of glt-h02-00-正方形折成三角錐
分數的圖示的副本
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Area
Curve Sketching
Ellipse
Equations
Arithmetic Operations