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06-03-2018
Mathematics

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06-03-2018

The sum of all angles of a pentagon is 540°, because you can draw interior lines to divide it into 3 triangles which each have angles that sum to 180, and 3 times 180 is 540.

So for x we have 540 - 83 - 89 - 119 - 90 = 159° left

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