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Compare areas by cutting shapes Q1
Author:
Shum Kwok Ching
,
GeoGebra Institute of Hong Kong
GeoGebra
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空间中两直线的位置关系
球体的体积推导
漂亮的摇摆曲线
多邊形的面積
兩位數除以一位數（二）
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拿破崙三角形(費馬點)
直線排列 4
ch14 p.30#31
製作一個面積是24平方厘米的平行四邊形。
法線 (The Normal Line)
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Rectangle
Variance
Percentages
Geometric Mean
Polygons