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兩圓的公切線
Author:
鍾元杰
兩圓的公切線
GeoGebra
New Resources
兩組對邊相等的四邊形
找出對稱軸
三位數除以一位數（二）
四邉形 (四年級) 教師版
GeoGebra笔记功能体验课件
Discover Resources
國徽
製作對稱圖形 LEVEL 1
摺長方形2
拋物線6--包絡線法
任意三棱锥的外接球
Discover Topics
Constructions
Mathematics
Rational Numbers
Distributions
Conditional Probability