This topic focuses on solving for unknown angles formed by parallel lines intersected by a transversal, with a special emphasis on configurations that involve a triangle connected to the middle of the crossing line. The problems involve identifying specific angles based on given diagrams, using principles from geometry related to intersecting, parallel, and perpendicular lines. Each problem presents multiple-choice answers, requiring students to apply their understanding of geometric properties and relationships to determine the correct angle measurements.

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