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任务8：一线三等角的相似模型
Author:
陈丽婷
GeoGebra
New Resources
找出對稱軸
GeoGebra笔记功能体验课件
兩位數除以一位數（一）
異分母分數減法
【案例】圆柱体内放置一个大球六个小球
Discover Resources
八芒星
Trigonometric Identities
中國傳統剪紙_團花
圖形的周界
Quiz on Addition and Subtraction of Directed Numbers (2)
Discover Topics
Continuity
Vectors
Correlation
Linear Equations
Subtraction