Question

which angle measurements do not create a triangle?
90,45,45
50,60,40
50,100,30
60,60,60

Explanation:

Step1: Sum first angle set

$90 + 45 + 45 = 180$

Step2: Sum second angle set

$50 + 60 + 40 = 150$

Step3: Sum third angle set

$50 + 100 + 30 = 180$

Step4: Sum fourth angle set

$60 + 60 + 60 = 180$

Step5: Identify non-180 sum

A triangle's angles sum to $180^\circ$; the set that does not equal this cannot form a triangle.

Answer:

50,60,40