Lines lll, mmm, and nnn are parallel to each other and ppp is a transversal. parallel lines Also, \dfrac{\angle{x}}{\angle{y}}=\dfrac{3}{7} ∠y ∠x ​ = 7 3 ​ start fraction, angle, x, divided by, angle, y, end fraction, equals, start fraction, 3, divided by, 7, end fraction. Find \angle{z}∠zangle, z.