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杯子反射光線(包絡)
Author:
陳柄何
Topic:
Curve Sketching
GeoGebra
New Resources
直角坐標平面上的旋轉變換
兩位數除以一位數（一）
找出對稱軸
第八周作业
兩組對邊相等的四邊形
Discover Resources
作業3-1 增加互動功能
圖形的內部、外部與周界
ladder
斜坐標
橢圓3--平行四邊形法
Discover Topics
Derivative
Division
Circle
Parabola
Geometric Distribution