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Today we derive the 4 angle theorems, all we need to know is: A circle has 360° and the sum of the interior angles of a triangle is 180° If you want to support the channel, then share, subscribe, comment and like the videos! 0:00 Introduction 0:11 Adjacent angle theorem 1:05 Vertex angle theorem 2:06 Step angle theorem 3:18 Alternate angle theorem #AngleTheoremDerivation #AngleTheoremsDerivation