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等截距和直線包絡拋物線
Author:
Wu Xiao-Ren
GeoGebra
New Resources
畫出對稱圖形
拼砌四邊形
找出對稱軸
第八周作业
判斷球體
Discover Resources
均分除法（整數÷整數）
研習講義
Staff Development Temp
多邊形面積探究1
congruent activity
Discover Topics
Variance
LCM and GCD
Constructions
Dilation
Equilateral Triangles