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kąt górny=x
kąt dolny=x+30
x+30+x+30+x=180
3x+60=180
3x=120
x=40
40, 70, 70
3x = 120
x = 40
40 + 30 = 70
odp. w tym trojkacie katy wynosza: 70, 70 + 40 stopni. ;']