Revision history of "File:First six triangular numbers.svg"

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  • (cur | prev) 20:45, 21 June 2016‎ Tom (talk | contribs)‎ . . (109 bytes) (+109)‎ . . (From [https://en.wikipedia.org/wiki/Triangular_number#/media/File:First_six_triangular_numbers.svg Wikipedia])
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