Question

which set of numbers does not create a triangle80 cm, 25 cm, 1 m 5 m, 12 m, 8 m 110 ft, 12 yd, 150 ft7 yd, 13 yd, 19 yd

Answer 1

The two smallest sides have to be bigger than the third side for it to be a triangle.

Answer 2

Remember the triangle inequality theorem? Two sum of any two sides of a triangle must be greater than the third one. Use this and test it out on the numbers you have.