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Mathematics 9 Online
OpenStudy (anonymous):

I'm going to insert a pic

OpenStudy (anonymous):

OpenStudy (anonymous):

i need number 1 sorry its backwards

OpenStudy (jdoe0001):

hmmm what are those lines between AB and BC ? |dw:1408667333836:dw|

OpenStudy (jdoe0001):

http://en.wikipedia.org/wiki/Hash_marks

OpenStudy (anonymous):

yeah

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