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Parabola_Vertical
Author:
Alex Leong
GeoGebra
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兩組對邊相等和有直角的四邊形
兩組對邊相等的四邊形
兩位數除以一位數（二）
【案例】2018年全国1卷理科12题
找出對稱軸
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math test
曲柄搖桿
作業
星形线-Astroid Curve-with-Envelope Command
質數
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Calculus
Definite Integral
Prism
Addition
Sine