In this topic, you learned about constructions that involved angles and parallel lines. All the constructions you have learned thus far have involved a compass and a straightedge. The first construction you learned about was how to bisect a given angle. The second construction that you explored was how to construct a congruent angle to a given angle. The last construction you learned about was how to construct a line that is parallel to a given line through a point that was not on the line.