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圓-3
Author:
Kook kin yip
GeoGebra
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撒针估算面积实验
常见四边形是否是双心四边形
龙形曲线-分形龙
正方形雪花图案
科赫雪花
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RHS全等性質
面積
直線上的鄰角_1
P1 1st Maths
Quiz on Solving One-step Linear Equations (1)
Discover Topics
Tangent Function
Exponential Functions
Numbers
Right Triangles
Geometric Distribution