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Which combination of three side lengths will NOT form a triangle?

15 cm, 8 cm, 6 cm

9 mm, 6 mm, 5 mm

12 in, 9 in, 6 in

4 ft., 5 ft., 3 ft.

Respuesta :

Answer:

The first set.

Step-by-step explanation:

15 cm, 8 cm and 6 cm, because 15 > 6 + 8.

Answer:

15 cm, 8 cm, 6 cm

Step-by-step explanation:

This is because the third length will always have to be less than the first and second added together. When you take 8 plus 6 the answer is 14 but 15 is larger than 14 so you cannot make a triangle out of that.

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