Question 305008: Which list could not be the measures of lengths of the three sides of a given triangle?
2 ft, 6 ft, 5 ft
12 yd, 35 yd, 20 yd
5 cm, 12 cm, 15 cm
11 mi, 4 mi, 12 mi
??
Found 2 solutions by Alan3354, richwmiller:
Answer by Alan3354(30993)   (Show Source):
You can put this solution on YOUR website!Which list could not be the measures of lengths of the three sides of a given triangle?
2 ft, 6 ft, 5 ft
12 yd, 35 yd, 20 yd
5 cm, 12 cm, 15 cm
11 mi, 4 mi, 12 mi
------------------------
12 yd, 35 yd, 20 yd This one won't work.
Answer by richwmiller(9135)  (Show Source):
You can put this solution on YOUR website!let's look at some known triangles
3,4,5 and 5, 12, 13
the third side is less than the sum of the other two
3+4>5
4+5>3
3+5>4
but 12,20 32
12+20<35
so this can't be a triangle
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