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y-kąt drugi
kąt prostokąty
90+x=4y /-90
90+x+y=180
x=4y -90
90+4y-90+y=180
5y=180/:5
y= 36
x=4*36-90
x=54
spr. 54+36+90=180
90+54=144
36*4=144