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Quiz on Discriminant 判別式：測驗
Author:
Alex CHIK
GeoGebra
gMath 互動數學教室
http://www.geogebra.hk
New Resources
四邊形的特性
畫出對稱圖形
直角坐標平面上的旋轉變換
異分母分數減法
錐體建築師
Discover Resources
大邊對大角
Relationships among 3 Circle Theorems 三個圓定理的關係
測試
rotational symmetry_3
圓心角兩倍於圓周角
Discover Topics
Equilateral Triangles
Function Graph
Angles
Diagrams
Arithmetic