Question

carmen found m∠1 this way: m∠1 = 105° because if two lines are parallel, alternate exterior angles are equal. is her answer correct? explain why or why not.

Explanation:

$\angle1$ and the $105^{\circ}$ - angle are alternate - exterior angles. Lines $r$ and $s$ are parallel. By the alternate - exterior angles theorem, they are equal.

Answer:

Yes, her answer is correct.