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How do i find the answer ?

Mathematics
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Screen Shot 2014-07-09 at 11.58.31 AM.pn
Jul 9th, 2014

You know this is a quadrilateral, thus, you know the sum of the interior angles must be 360 degrees.  Consequently, you can set up the following equality:

360 = (x-11)+(4x-2)+(x-9)+(3x-5) = 9x-27

Thus, 9x = 387

Thus, x = 43

Now, solve for theta:

theta = 3x-5 = 3(43)-5 = 124


Jul 9th, 2014

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