This chapter focuses on angle relationships. The main theme of this unit is "Use a geometry principle (relationship) to set up an algebra equation."
We start with definitions to refresh students on voabularly they may have heard previously in math classes. Some of the terms that you should know before the end of the unit are: parallel, perpendicular, congruent, supplementary, complementary, transversals, equilateral, isosceles, scalene. Our study of angle relationships begins by investigating the scenario of two parallel lines cut by a transversal. This creates 8 angles and some interesting relationships between pairs of those angles. We first learn the relationships (congruent or supplementary) between pairs of angles, then we revisited them and gave each pair of angles a name. The names are important for communication purposes, but the relationships are arguably more valuable because the relationships are what help us set-up algebra equations.