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Question 4
Author:
Shum Kwok Ching
GeoGebra
New Resources
兩位數加法
找出對稱軸
三位數除以一位數（二）
画直线等分三角形的面积
四邉形 (四年級) 教師版
Discover Resources
色彩視覺藝術：奇幻光圈
籐編直線與曲線
蝴蝶線 butterfly line
百度
v型咖啡濾網
Discover Topics
Conic Sections
Functions
General Quadrilateral
Rectangle
Equations