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gjc090a23 鈍角三角形外心
Author:
均一
GeoGebra
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【案例】2013年安徽高考15题
拼砌四邊形
兩位數加法
三位數除以一位數(二)
兩組對邊相等的四邊形
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Trajectory of system: y'=y^2-y
glt-c02-08 三角柱旋轉
三角恒等式證明
圓內接四邊形任務二:提示一
數學解題2
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Kite
Equilateral Triangles
Trigonometric Functions
Secant Line or Secant
Calculus