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Author:
dhc987
GeoGebra
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球體建築師
近似值：有效數字
算柱 (兩位數)
Fibonacci Clock
美國國旗 (Codex 版)
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螢橋國中 周孟承
地球－完整球面
“勾股树”最极易迭代法单晨制作实验16
算幾不等式
已知長方形周界和長求闊
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Pyramid
Equilateral Triangles
Translation
Congruence
Similarity Transformation or Similarity