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Mathematics 22 Online
OpenStudy (anonymous):

parallel lines must have same slope, true or false ?

OpenStudy (kc_kennylau):

True

OpenStudy (anonymous):

is it true ?

OpenStudy (anonymous):

ok thank guy just wanna check

OpenStudy (kc_kennylau):

Except when they're both vertical lines and the slopes are undefined and blah blah blah

OpenStudy (kc_kennylau):

But I think the model answer would be true

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