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關於原點對稱的點和坐標
Author:
Loi Teng Chong
GeoGebra
New Resources
四邉形 (四年級) 教師版
異分母分數減法
判斷球體
三位數除以一位數（二）
找出對稱軸
Discover Resources
Translation 平移變換
Apollonius Problem 4 LLP Power 12
日本國旗
gjc102a14 三角形內的高
Copy of 釘點紙畫三角形
Discover Topics
Linear Functions
Dilation
Geometric Mean
Arithmetic
Ellipse