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koch snowflake的副本
Author:
魏向东
,
Len Brin
GeoGebra
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以竹簽拼砌三角形
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Roll 6d five times
A note on Erdős’s mysterious remark
Untitled
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Ejemplo 3.
Shermir test 3
Оптимален конус
oli3D3
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Median Value
Algebra
Multiplication
Matrices
Hyperbola