15 and 5
12 and 8
10 and 10
-10 and 2 -12 and 4 -20 and 12
-1, 6 and -12.
-13
-43
The angles around the vertexes of a truncated icosahedron (120+120+108) do not add up to 360 because they are not all in the same plane, ie. the polyhedron is a 3D structure not 2D. If the vertex is projected onto a 2D surface the angles become 124:20 +124:20 +111:20 which do add up to 360. Anyone with an IQ greater than their shoe size would know this :-)
15 and 4 are the factors of 120 that add up to 19.
146
Factors multiply. The same set of numbers won't add up to both 140 and 240, but 120 and 20 are factors of 240 that total 140.
-10 and 2 -12 and 4 -20 and 12
-1, 6 and -12.
31
None of the factor pairs of 120 add up to -14. If that was -120, you could use -20 and 6.
26
34
79
113
-13