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线段旋转扫过面积
Author:
王阳
GeoGebra
New Resources
撒针估算面积实验
双心四边形
常见四边形是否是双心四边形
平行線的判定
盈利與虧蝕
Discover Resources
trapezium
Copy of 尋找等腰三角形 Isosceles Triangle Hunt
test1
Compare areas by cutting shapes Q3
黃金三角形
Discover Topics
Definite Integral
Special Points
Rhombus
Function Graph
Matrices