4 years ago

PLZZZ HELPPPPP

Mathematics

1 answer:

olga nikolaevna [1]4 years ago

8 0

Step-by-step explanation:

let 3 sides be a b c

a-b<c<a+b (always)

we have 7+5 =12 (contradict the above property)

-> 12,7,5 will not make a triangle

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