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x=90-½x
x+½x=90
1,5x=90
x=90:1,5
x=60
90-x=90-60=30
kąty mają:60,30 i 90⁰
x=90-1/2x
x+1/2x=90
1,5x=90:1,5
x=60
Odp.Kąty mają miary 30,60 i 90