Question

PLZZZ HELPPPPP

Which set of sides will NOT make a triangle?
11 cm, 13 cm, 3 cm
2cm, 3cm, 4cm
12 cm, 7 cm, 5 cm
19 cm, 14 cm, 7 cm

Answer 1

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