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三視圖
Author:
黃俊翔
Topic:
Geometry
GeoGebra
New Resources
圓的基本性質
直線的斜率：水平變化 & 鉛垂變化
双心四边形
三角函数 的副本
折扣
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[問題] a² + b² = 1, (c-4)² + (d-2)² = 5，求 ad - bc 最大值？
directed number_hot air balloon
Angle between Lateral Faces 1
錐體的橫截面
地球儀
Discover Topics
Tangent Line or Tangent
Special Points
Linear Programming or Linear Optimization
Planes
Surface