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重难题组周练（1）——二次函数
Author:
程洁
Topic:
Quadratic Functions
GeoGebra
New Resources
Nested spiral octagon
球體建築師
算柱 (兩位數)
sanjiaohanshu
四邊形的特性
Discover Resources
利用Locus指令將封閉區域塗色
Graphs of Linear Equations in Two Unknowns 二元一次方程的圖像
Copy of 尋找等腰三角形 Isosceles Triangle Hunt
极坐标系
开关灯游戏
Discover Topics
Pythagoras or Pythagorean Theorem
Set Theory
Difference and Slope
Hyperbola
Scalene Triangles