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正弦余弦刻度尺
Author:
丁银杰
Topic:
Trigonometry
GeoGebra
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柱體建築師
拼砌四邊形
兩位數除以一位數（一）
兩位數除以一位數（二）
兩組對邊相等和有直角的四邊形
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高中數學B1C1數與式
拋物線標準式101.11.22
緯度、日照、影長
長方體旋轉
作業
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Circle
Mode
Incircle or Inscribed Circle
Power Functions
Quadratic Functions