Решебник по геометрии 11 класс. Атанасян ФГОС 573

Авторы:
Год:2023
Тип:учебник

573

\[\boxed{\mathbf{573.}ОК\ ГДЗ\ –\ домашка\ на\ 5}\]

\[\textbf{а)}\ \overrightarrow{\text{CD}} = - \overrightarrow{\text{DC}}\ и\ \ \overrightarrow{\text{DB}} - \overrightarrow{\text{BD}}:\]

\[\overrightarrow{\text{AB}} = \overrightarrow{\text{AC}} + \overrightarrow{\text{CD}} + \overrightarrow{\text{DB}} =\]

\[= \overrightarrow{\text{AC}} - \overrightarrow{\text{DC}} - \overrightarrow{\text{BD}}.\]

\[\textbf{б)}\ \overrightarrow{\text{AD}} = - \overrightarrow{\text{DA}}:\ \]

\[\overrightarrow{\text{AB}} = \overrightarrow{\text{AD}} + \overrightarrow{\text{DC}} + \overrightarrow{\text{CB}} =\]

\[= - \overrightarrow{\text{DA}} + \overrightarrow{\text{DC}} + \overrightarrow{\text{CB}}.\]

\[\textbf{в)}\ \overrightarrow{\text{AD}} - \overrightarrow{\text{DA}};\ \ \overrightarrow{\text{DC}} = - \overrightarrow{\text{CD}};\ \ \overrightarrow{\text{CB}} =\]

\[= - \overrightarrow{\text{BC}}:\]

\[\overrightarrow{\text{AB}} = \overrightarrow{\text{AD}} + \overrightarrow{\text{DC}} + \overrightarrow{\text{CB}} =\]

\[= - \overrightarrow{\text{DA}} - \overrightarrow{\text{CD}} - \overrightarrow{\text{BC}}.\]


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