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Určenie súradníc bodu D pre rovnobežník
Sú dané body \( \mathrm{A}[1 ;-1], \mathrm{B}[5 ; 1], \mathrm{C}[2 ; 2] \). Urči súradnice bodu \( \mathrm{D} \) tak, aby body \( \mathrm{A}, \mathrm{B} \) a C ležali vo vrcholoch rovnobežníka.
\( \begin{array}{l}\mathrm{D}_{1}[0 ; 2] \\ \mathrm{D}_{2}[-4 ; 3] \\ \mathrm{D}_{3}[6 ;-4]\end{array} \)
\( \begin{array}{l}\mathrm{D}_{1}[8 ; 5] \\ \mathrm{D}_{2}[-1 ; -1] \\ \mathrm{D}_{3}[3 ;-1]\end{array} \)
\( \begin{array}{l}\mathrm{D}_{1}[6 ; 4] \\ \mathrm{D}_{2}[-2 ; 0] \\ \mathrm{D}_{3}[4 ;-2]\end{array} \)
\( \begin{array}{l}\mathrm{D}_{1}[7 ; 3] \\ \mathrm{D}_{2}[-3 ; 1] \\ \mathrm{D}_{3}[5 ;-3]\end{array} \)