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動態織線
Author:
YiLongYen
GeoGebra
New Resources
圓的切線方程
圓周公式的應用
兩位數除以一位數（一）
祖冲之的期望：内棋与外棋
兩位數加法
Discover Resources
包路線
-3 ≤ cosA+cosB+cosC ≤ 3/2
graph of functions
紙張的長與闊
cube(方块堆叠)
Discover Topics
Geometric Transformations
Calculus
Subtraction
Linear Programming or Linear Optimization
Constructions