This math topic focuses on solving for unknown angles involving parallel lines with a dip in the middle, which is part of a larger unit on intersecting, parallel, and perpendicular lines in geometry. Students solve problems that require understanding and applying properties of parallel lines and the angles formed when these are intersected by a transversal. Each problem presents a different configuration of lines and asks students to calculate a specific angle, given as angle X, with multiple choice answers provided.

Work on practice problems directly here, or download the printable pdf worksheet to practice offline.