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Mathematics 12 Online
OpenStudy (anonymous):

g

OpenStudy (zale101):

subtract 310 from each side

OpenStudy (zale101):

i'm sorry, the 40 degrees should be a number higher

OpenStudy (zale101):

|dw:1375058568223:dw|

OpenStudy (zale101):

n=5 because there are 5 angles 90+90+angle E+90+135=(5-2)180

OpenStudy (zale101):

angle E+405=540 angle E=135

OpenStudy (zale101):

this is a good example i can think of

OpenStudy (zale101):

for the formula (n - 2)180

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