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截痕
Author:
Peter
GeoGebra
New Resources
兩組對邊相等和有直角的四邊形
找出對稱軸
異分母分數減法
兩位數加法
球體建築師
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駐波:相向而行的兩行進波線性疊加而成
畢氏定理拼圖007(8片)
分數
八邊形碎形
anlge at centre twice angle at circumference
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Terms
Complex Numbers
Secant Line or Secant
Circumcircle or Circumscribed Circle
LCM and GCD