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Mathematics 15 Online
OpenStudy (devonhoward15):

What is the value of x?

OpenStudy (devonhoward15):

i forget... what is the inside supposed to equal?

OpenStudy (devonhoward15):

i can get the answer once i know what its supposed to equal

OpenStudy (devonhoward15):

@Will.H

OpenStudy (devonhoward15):

@mathmale

OpenStudy (shadowlegendx):

Identify the shape, then figure out the sum of all the angles, of said shape

OpenStudy (devonhoward15):

its a octagon... and i think its supposed to equal 1,080

OpenStudy (shadowlegendx):

"So, the sum of the interior angles of an octagon is 1080 degrees." You are correct

OpenStudy (shadowlegendx):

So, subtract all the angles from 1080

OpenStudy (shadowlegendx):

After you subtract the seven angles, the number you end up with will be your eighth

OpenStudy (devonhoward15):

149 is the answer

OpenStudy (shadowlegendx):

If you wish to check your work, just add them all up again and if it equals 1080, then that is your answer :)

OpenStudy (devonhoward15):

just did and got 1,080 thanks

OpenStudy (shadowlegendx):

No problem

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