This document contains 8 multi-section practice problems related to line & angle proofs, specifically angle relationships formed by parallel lines and a transversal that can be used as anticipatory sets, guided practice, independent practice, exit slips, homework, quiz, or test problems. The problems and activities are designed to assist students in achieving the following standards: G.CO.9, as well as the mathematics practice standards. They are also designed to help the teacher assess the stu