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三角函數的性質
Author:
yuchengda
GeoGebra
New Resources
拼砌四邊形
【案例】圆柱体内放置一个大球六个小球
兩位數除以一位數（一）
判斷球體
畫出對稱圖形
Discover Resources
圓錐截痕
愛心曲線
巴拉拉能量
elevation
拋物線1 焦點法
Discover Topics
Tangent Line or Tangent
Pythagoras or Pythagorean Theorem
Division
Conic Sections
Trapezoid