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橢圓重心軌跡1
Author:
李佳奇
GeoGebra
New Resources
【案例】2018年全国1卷理科12题
拼砌四邊形
兩位數除以一位數（一）
柱體建築師
找出對稱軸
Discover Resources
「分點」平行四邊形
Combined Quiz on Bearings 方位：合併測驗
纏繞畫1
正弦函数图象
性質三十三_四邊形四邊外接指定條件的平行四邊形
Discover Topics
Arithmetic Operations
Tangent Line or Tangent
Similar Triangles
Arithmetic
Rhombus