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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
【案例】2018年全国1卷理科12题
判斷球體
四邊形的特性
三位數除以一位數（一）
錐體建築師
Discover Resources
圓周角
蝴蝶定理推廣證明2(交比)
曲柄滑塊
吃點點
Locus (Two points 2)
Discover Topics
Frequency Distribution
Real Numbers
Median Line
Orthocenter
Solids or 3D Shapes