Which three lengths could be the lengths of the sides of a triangle?

8 cm, 23 cm, 11 cm
9 cm, 15 cm, 22 cm
13 cm, 5 cm, 18 cm
21 cm, 7 cm, 7 cm

Question

Which three lengths could be the lengths of the sides of a triangle?
 	
	8 cm, 23 cm, 11 cm
	9 cm, 15 cm, 22 cm
	13 cm, 5 cm, 18 cm
	21 cm, 7 cm, 7 cm

anonymous · Answer

The sum of two sides must be greater than the third side. We did this. If you understand that statement, then you should tell me what the answer is.

wolf1728 · Answer

The Triangle Inequality Theorem states that for 3 lines to form a triangle, the longest side must be shorter than the sum of the other 2 sides.
When stated this way, only 1 test has to be done instead of three.

anonymous · Answer

hmm 8 cm, 23 cm, 11 cm?

anonymous · Answer

sorry first time doing this

wolf1728 · Answer

No you did not have the correct answer.

wolf1728 · Answer

23 > 11+8 cannot form a triangle.