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OpenStudy (anonymous):
Find the measure of angle A. Show equations and all work that leads to your answer. http://oi39.tinypic.com/314s0h2.jpg
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OpenStudy (anonymous):
7 sides so internal angle add to give 900 degrees Therefore 900= A + B + C + D + E + F + G 900= 9x -2 +10x + 2 + 165 + 100 + 5x + 83 + 12x + 18 + 138 900= 36x + 504 396= 36x \[x = \frac{ 396 }{ 36 }\]x= 11 A= 9x - 2 A= 99- 2 A= 97
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