Angles formed by Parallel Lines Cut by a Transversal | 8.G.A.5 💗

In this video lesson, students will discover the many types of angles that are formed when parallel lines are cut by a transversal. Vocabulary is reviewed and explained. Visual diagrams are used to show the pattern between the eight angles formed by parallel lines and a transversal. The types of angles that are explained are vertical angles, corresponding angles, supplementary angles, alternate interior angles and alternate exterior angles. Student practice is embedded in the lesson. Exemplar problems are modeled and explained using content rich vocabulary.

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00:00 Introduction
00:39 Vocabulary
02:19 Vertical Angles & Supplementary Angles
03:39 Corresponding Angles
05:07 Interior and Exterior Angles
06:10 Alternate Interior Angles
06:47 Alternate Exterior Angles
07:11 Student Practice #1
08:12 Student Practice #2
08:55 Student Practice #3
09:38 Student Practice #4
10:59 Student Practice #5
13:14 Revealing the PATTERN

Common Core Math 8.G.A.5
Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.