[tex]Zadanie\ 1\\\\\mid AB\mid=\sqrt{(x_B-x_A)^2+(y_B-y_A)^2}\\\\ Pozim\ C\\\\a)\\\\ \mid AB\mid=\sqrt{(116-17)^2+(103-83)^2}=\sqrt{99^2+20^2}=\sqrt{9801+400}= \\\\=\sqrt{10201}=101\\\\\\\mid BC\mid=\sqrt{(176-116)^2+(23-103)^2}=\sqrt{60^2+(-80)^2}=\sqrt{3600+6400}=\\\\=\sqrt{10000}=100\\\\\\\mid CD\mid=\sqrt{(193-176)^2+(-121-23)^2}=\sqrt{17^2+(-144)^2}=\sqrt{289+20736}=\\\\=\sqrt{21025}=145[/tex]
