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This video is intended for review in 8th grade, before embarking on the study of further angle relationships. In this lesson we review these basic angle relationships from 7th grade: concept of an angle, acute, right, obtuse, and reflex angles, adjacent angles, complementary angles, supplementary angles, and vertical angles. Then we have two exercises with unknown angles to solve. :).
Corresponding angles — video lesson
Math Mammoth Grade 8 curriculum