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50:2=25 (drugi bok)
Ob=2×65m+2b
Ob=130m+2b
180m-130m=2b
50m=2b
b=25m
odp.Boki deltoidu wynoszą 25m, 25m, 65m, 65m.
180m-130m=50m
50m:2=25m
2bok 65m
3bok 25m
4bok 25m