In this video we'll do a visual proof to show by pythagoras theorem, a^2 + b^2 = c^2, must be true. I take you through a step by step visual process so that by the end of the proof you'll understand exactly why the formula has its values. Chapters: 0:00 Introduction 0:32 Explaining the approach (the method of proof) 2:27 Beginning the proof 3:12 Building a visual structure for the proof 4:53 Expressing the area in terms of its triangles 6:52 Simplifying the formula for the area 7:48 The resulting formula proves the theorem. Subscribe to TinyMaths here: