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4M1 周界 多邊圖形的周界 20171024
Author:
makkei
GeoGebra
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平行線的斜率
常见四边形是否是双心四边形
直線的斜率
盈利與虧蝕
撒针估算面积实验
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整數或分數÷分數_ 工作紙（一）_題1a
折射的現象
四心的變化II
多边形外角和的副本
二次函数图像描点法
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Parallelogram
Equilateral Triangles
Symmetry
Line Segment
Correlation