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OpenStudy (anonymous):
Find angle A
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OpenStudy (anonymous):
OpenStudy (anonymous):
The angle of point A? We know that this shape is a quadrilateral, so all angles must add up to 360 degrees. (x+8) + (x+5) + (2x-1) + 84 = 360. The set up is now finished and we can use algebra to solve for x. Simplifying: 4x + 12 + 84 = 360 4x + 96 = 360 4x = 264 x = 66. So the angle at point A must be 66+5 = 71 degrees.
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