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Exercitiul 4 va rog repede

Exercitiul 4 Va Rog Repede class=

Răspuns :

AB=rad[(4+4)^2 + (-2+2)^2]
AB=rad64 =>AB=8
BC=rad[(4-4)^2 + (2+2)^2]
BC=rad16 =>BC=4
CD=rad[(-4-4)^2 + (2-2)^2]
CD=rad64 =>CD=8
DA=rad[(-4+4)^2 + (-2-2)^2]
DA=rad16 =>DA=4
AB=CD si BC=DA =>ABCD dreptunghi