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Vector in R2
Author:
sealion1215
GeoGebra
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兩組對邊相等的四邊形
兩位數除以一位數（二）
畫出對稱圖形
兩組對邊相等和有直角的四邊形
【案例】圆柱体内放置一个大球六个小球
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數學作業
加法運算
蝴蝶定理證明2：綜合法
Properties of parallelogram(平行四邊形的性質)
翰林數學_2下_CH4-1_截線與截角的意義
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Continuity
Fractions
Normal Distribution
Histogram
Linear Regression