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Mathematics 12 Online
OpenStudy (narissa):

How do I solve this?

OpenStudy (narissa):

OpenStudy (narissa):

@3mar

OpenStudy (studygurl14):

First off, how many sides are there?

OpenStudy (narissa):

7

OpenStudy (3mar):

we did it before!

OpenStudy (studygurl14):

Yes, then use the formula (s-2)180 to find the sum of the interior angles

OpenStudy (studygurl14):

And subtract all the known angle values to get the value of x

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