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正餘弦函數的疊合
Author:
Lee Chung-yu
,
horngyie1
正餘弦函數的疊合
GeoGebra
New Resources
三位數除以一位數（二）
兩組對邊相等和有直角的四邊形
画直线等分三角形的面积
【案例】2018年全国1卷理科12题
畫出對稱圖形
Discover Resources
中點軌跡(動點在兩圓上)
利用对称求线段和最值
圓周 (圖形C)
MeArm機構模擬V.2
圖一
Discover Topics
Indefinite Integral
Secant Line or Secant
Rotation
Orthocenter
Differential Calculus