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包含除法（1 ÷分數）的副本
Author:
冯圣军
,
GeoGebra Institute of Hong Kong
Topic:
Fractions
GeoGebra
New Resources
直角坐標平面上的旋轉變換
畫出對稱圖形
Fibonacci Clock
sanjiaohanshu
Nested spiral octagon
Discover Resources
二次函數
start and end clock face
對稱成分(零序.正序.負序)
滚动的四面体
线性规划
Discover Topics
Diagrams
Terms
Matrices
Circle
Hypothesis Testing