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Mathematics 8 Online
OpenStudy (nightmarenight):

I have one problem I don't understand? Check my answer? Attached as a photo

OpenStudy (nightmarenight):

OpenStudy (bibby):

alternate interior angles are "outside" on the Z shape. like so:|dw:1414093908935:dw|

OpenStudy (bibby):

by z I mean|dw:1414093966452:dw|

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