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3a=180
a=180:3
a= 60 stopni
6 = 2* 60 stopni = 120 stopni
2 . 180-28= 152
kąt pierwszy - x = 60'
kąt drugi - 2x = 60*2
razem 180 '
x+2x = 180'
3x= 180 ' / 3
x = 60 '
2.
kąt pierwszy - x = 76'
kąt drugi - x + 28' = 76' + 28' = 104'
razem 180'
x+x+ 28' = 180'
2x = 180'-28'
2x = 152' /2
x= 76'