polygon

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polygon

by mariah » Fri Jan 23, 2009 1:24 pm
10.There is a picture. The interior angles of a polygon are 2x, 2x, 3x, 2x, x, respectively. Y is the supplement angle of the 3x measure angle. Y=?

dont have oa ,
Last edited by mariah on Sun Feb 08, 2009 9:37 pm, edited 1 time in total.
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by truplayer256 » Fri Jan 23, 2009 1:32 pm
2x+2x+2x+3x+x=540
x=54
3x+y=180
3(54)+y=180
y=180-162=18