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Śr=[(6-(-4))/2;(10-2)/2]=[-5,4]
/dł/=√(6-(-4))²+(10-2)²=√(10)²+(8)²=√100+64=√164=2√41
c)c) (11,-8) (10,11)
Śr=[(10-11)/2;(11-(-8))/2]=[-½,19/2]
/dł/=√(10-11)²+(11-(-8))²=√1+361=√362
b_ nie wiem
c) przecina sie na 1