Which set of measurements could make a triangle?
1) 1 mm, 2 mm, 3 mm
2) 7 mm, 4 mm, 3 mm
3) 9 mm, 10 mm, 8 mm
4)11 mm 8 mm, 20 mm
help me fast please

All you have to do is use the Triangle Inequality Theorem, which states that the sum of two side lengths of a triangle is always greater than the third side. If this is true for all three combinations of added side lengths, then you will have a triangle.

Formula:

a + b = (answer) > c

a + c = (answer) > b

b + c = (answer) > a

try to solve it yourself so you can do it on your own in the future.

Which set of measurements could make a triangle? 1) 1 mm, 2 mm, 3 mm2) 7 mm, 4 mm, 3 mm3) 9 mm, 10 mm, 8 mm 4)11 mm 8 mm, 20 mm help me fast please​

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Which set of measurements could make a triangle?
1) 1 mm, 2 mm, 3 mm
2) 7 mm, 4 mm, 3 mm
3) 9 mm, 10 mm, 8 mm
4)11 mm 8 mm, 20 mm
help me fast please