Beautiful geometry of triangles #math #geometry #sum #tutor #triangle

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Shape of triangles does not matter. Assume they are all equilateral, then 6x60 = 360. Topologically it is equivalent, when unfolded, to an irregular hexagon with coloured external angles Σ = 360. (Ie traverse the 6 sides from any point takes you back to the start so 360)

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I figured out in 5 seconds without watching the video. Second prep BTW.

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