Question

look at this diagram:
if \\( \overleftrightarrow { n p } \\) and \\( \overleftrightarrow { q s } \\) are parallel lines and \\( m \angle s r t = 1 2 9 ^ { \circ } \\), what is \\( m \angle p o r \\)?
submit
\\( \square ^ { \circ } \\)

Explanation:

Step1: Use the property of parallel lines and transversal

When two parallel lines ($\overleftrightarrow{NP}$ and $\overleftrightarrow{QS}$) are cut by a transversal ($\overleftrightarrow{MT}$), $\angle SRT$ and $\angle POR$ are congruent because they are alternate - interior angles.

Answer:

$129$