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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
柱體建築師
四邉形 (四年級) 教師版
畫出對稱圖形
直角坐標平面上的旋轉變換
球體建築師
Discover Resources
國旗
test
外擺線
单位圆与正弦函数
seven-eighths sphere 八分之七球面
Discover Topics
Vectors 2D (Two-Dimensional)
Scatter Plot
Orthocenter
Unit Circle
Median Value