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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
兩組對邊相等的四邊形
兩組對邊相等和有直角的四邊形
畫出對稱圖形
異分母分數減法
三位數除以一位數（一）
Discover Resources
座標軸工具
好多好多正方形
平移法（四）
圖形繪製---心型線
線性變換對相關係數的影響
Discover Topics
Linear Programming or Linear Optimization
Frequency Distribution
Rhombus
LCM and GCD
Upper and Lower Sum or Riemann Sum