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平行線的斜率_hui sir
Author:
Hui Sir
GeoGebra
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三位數除以一位數（二）
四邊形的特性
兩組對邊相等和有直角的四邊形
判斷球體
【案例】2018年全国1卷理科12题
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比和比值
ycps4a1
多边形对角线
sin(x) 的函數圖形的副本
asdasd
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Special Points
Parallelogram
Fractal Geometry
Median Line
Coordinates