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畫三角形 題1d 的複本
Author:
Tony Cheng
,
GeoGebra Institute of Hong Kong
GeoGebra
New Resources
画直线等分三角形的面积
四邉形 (四年級) 教師版
找出對稱軸
三位數除以一位數（二）
GeoGebra笔记功能体验课件
Discover Resources
三角形面積與內切圓半徑
Positive angles & Negative angles
星球運動模擬
讀磅
解題二
Discover Topics
Functions
Natural Numbers
Statistics
Continuity
Means