Question

Urgentttt!!!! In reperul cartezian xOy se considera punctele A(1,1),B(4,1),C(4,4).Aratati ca AB=BC...chiar nu stie nimeni?? :(

Answer 1

[tex]AB= \sqrt{(x_B-x_A)^2+(y_B-y_A)^2}=\sqrt{(4-1)^2+(1-1)^2} =3\\ BC= \sqrt{(x_C-x_B)^2+(y_C-y_B)^2}=\sqrt{(4-4)^2+(4-1)^2} =3[/tex]