Which of these sides form a triangle? And which one doesn't form a triangle?
For 25 points?

1) 4.2 ft 5.6ft 7ft
2) 10 mi 24 mi 26 mi
3) 43.5m 54m 72.5m
4) 7.8 yd 15.4 yd 17 yd

Simple,

I learned this from my teacher...

the two smallest sides, when added together have to equal more than the largest side...

1.)4.2+5.6=9.8 9.8 vs. 7(Does create a triangle)

2.)10+24=34 34 vs. 26(Does create a triangle)

3.)43.5+54=97.5 97.5 vs. 72.5 (Does create a triangle)

4.)7.8+15.4=23.2 23.2 vs. 17 (Does create a triangle)

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Which of these sides form a triangle? And which one doesn't form a triangle? For 25 points? 1) 4.2 ft 5.6ft 7ft 2) 10 mi 24 mi 26 mi 3) 43.5m 54m 72.5m 4) 7.8 yd 15.4 yd 17 yd

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Which of these sides form a triangle? And which one doesn't form a triangle?
For 25 points?

1) 4.2 ft 5.6ft 7ft
2) 10 mi 24 mi 26 mi
3) 43.5m 54m 72.5m
4) 7.8 yd 15.4 yd 17 yd