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平行线分线段成比例
Author:
杨华
GeoGebra
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球体的体积推导
四邊形的特性
柱體建築師
【案例】2018年全国1卷理科12题
【案例】圆柱体内放置一个大球六个小球
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S5 geometry
test
平方根
餘弦定理修正項及風車證明
閱讀月曆
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Random Variables
Mode
Expected Value
Continuity
Similar Triangles