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Author:
范欣茹
GeoGebra
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兩組對邊相等的四邊形
【案例】2018年全国1卷理科12题
三位數除以一位數（一）
第八周作业
兩位數除以一位數（二）
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Pythagorean Triples 畢氏數組
Reflectional symmetry of Triangular prism
切割柏拉圖多面體
gjc096a19 平行四邊形內截兩扇形
双曲线的定义.许兴华数学
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Congruence
Binomial Distribution