Put 3 different numbers in the circles in the corner of a triangle, so that when you add the numbers at the end of each line, you always get a square number.

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embizze | High School Teacher | (Level 2) Educator Emeritus

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Here are two possible answers, both found by trial and error:

-4,20,29

** -4+20=16;20+29=49;-4+29=25

5,20,44

** 5+20=25;20+44=64;5+44=49