Ответ:
(n-2)*180
(5-2)*180=460
2x+2x+4x+5x+5x=460
18x=460
x=30
1,2=30
3=120
4,5=150
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Ответ:
(n-2)*180
(5-2)*180=460
2x+2x+4x+5x+5x=460
18x=460
x=30
1,2=30
3=120
4,5=150