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平行2
Author:
Hui Sir
GeoGebra
New Resources
直角坐標平面上的旋轉變換
三位數除以一位數（二）
【案例】2018年全国1卷理科12题
畫出對稱圖形
找出對稱軸
Discover Resources
三角形的外心軌跡
Viviani's curve
選修數學
計算
斜率的副本
Discover Topics
Rhombus
Square
Differential Equation
Function Graph
Matrices