Question

the movement of the progress bar may be uneven because questions can be worth more or less (including zero) depending on your answer. which of these statements is true? ( overrightarrow{uv} || overrightarrow{ab} ) and ( overrightarrow{uv} || overrightarrow{zy} ) ( overrightarrow{wx} perp overrightarrow{zy} ) and ( overrightarrow{wx} || overrightarrow{ab} ) ( overrightarrow{wx} perp overrightarrow{zy} ) and ( overrightarrow{ab} || overrightarrow{uv} ) ( overrightarrow{uv} perp overrightarrow{wx} ) and ( overrightarrow{ab} perp overrightarrow{wx} )

Explanation:

Step1: Analyze the first option

$\overleftrightarrow{UV}$ and $\overleftrightarrow{AB}$ are perpendicular (as shown by the right - angle symbol), so $\overleftrightarrow{UV}\parallel\overleftrightarrow{AB}$ is false. Also, $\overleftrightarrow{UV}$ and $\overleftrightarrow{ZY}$ are not parallel.

Step2: Analyze the second option

$\overleftrightarrow{WX}$ and $\overleftrightarrow{ZY}$ are perpendicular (right - angle symbol), and $\overleftrightarrow{WX}$ and $\overleftrightarrow{AB}$ are not parallel.

Step3: Analyze the third option

$\overleftrightarrow{WX}$ and $\overleftrightarrow{ZY}$ are perpendicular (right - angle symbol), and $\overleftrightarrow{AB}$ and $\overleftrightarrow{UV}$ are not parallel.

Step4: Analyze the fourth option

$\overleftrightarrow{UV}\perp\overleftrightarrow{WX}$ (right - angle symbol at \(U\)) and $\overleftrightarrow{AB}\perp\overleftrightarrow{WX}$ (right - angle symbol at \(B\)).

Answer:

$\overleftrightarrow{UV}\perp\overleftrightarrow{WX}$ and $\overleftrightarrow{AB}\perp\overleftrightarrow{WX}$ (the fourth option)