What is a connection between a triangular number and a square number?

Im trying to find out- for maths purposes of course ;) – what are some connections between a triangular and a square number…?
PLEASE HELP! :)
thanks x

diference between square numbers & triangular numbers r also triangular numbers.
eg-4-3=1, 9-6=3, 16-10=6……….

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2 Responses to What is a connection between a triangular number and a square number?

  1. lulu says:

    They are both shape numbers ;) x
    References :

  2. Pancha says:

    diference between square numbers & triangular numbers r also triangular numbers.
    eg-4-3=1, 9-6=3, 16-10=6……….
    References :