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Mathematics 18 Online
OpenStudy (anonymous):

Help

OpenStudy (anonymous):

OpenStudy (anonymous):

Please Explain

OpenStudy (triciaal):

the sum of the angles = 180

OpenStudy (anonymous):

still makes no sense @triciaal

OpenStudy (anonymous):

so add the equations together then set them equal to 180 degress

OpenStudy (triciaal):

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