Четырёхугольник ABCD — ромб. Укажи вектор, равный вектору: 1) \vec{CD}; 2) \vec{DC}; 3) \vec{BO}; 4) \vec{DO}. Ответ: 1) \vec{CD}= \mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}} ; 2) \vec{DC}= \mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}} ; 3) \vec{BO}= \mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}} ; 4) \vec{DO}= \mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}} .

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Четырёхугольник \(ABCD\) — ромб. Укажи вектор, равный вектору: 1) \(\vec{CD}\) ; 2) \(\vec{DC}\) ; 3) \(\vec{BO}\) ; 4) \(\vec{DO}\) .

Ответ:

\(\vec{CD}=\) \(\mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}}\) [ ];
\(\vec{DC}=\) \(\mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}}\) [ ];
\(\vec{BO}=\) \(\mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}}\) [ ];
\(\vec{DO}=\) \(\mathrlap{\vec{\phantom{ \raisebox{1.1em}{\kern{3.1em}}}}}{\phantom{}}\) [ ].