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S8G5 增加的小方格
Author:
安迎春
GeoGebra
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第八周作业2
平行線的判定
科赫雪花
双心四边形
撒针估算面积实验
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邊長與三角形 數學教室(1/4)
圓形,三角形軌跡觀察
平移法（二）
Testing 20170308
P3 平行與垂直01 測試
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Congruence
Integral Calculus
Translation
Isosceles Triangles
Similar Triangles