Parallel lines p. q, and rare cut by transversal t. Which of these describes how to find the value of x?
1.Lines p and rare parallel, so the alternate
exterior angles are congruent; x = 130.
2.Lines p and r are parallel, so the alternate
exterior angles are supplementary; x = 50.
3.Lines q and r are parallel, so the
corresponding angles are congruent; x = 50.
4.Lines q and rare parallel, so the interior
angles are supplementary; x = 130.