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Mathematics 9 Online
OpenStudy (anonymous):

(MEDAL&FAN)

OpenStudy (anonymous):

OpenStudy (skullpatrol):

Any ideas?

OpenStudy (anonymous):

I do believe it's the last choice..

OpenStudy (skullpatrol):

|dw:1360227305923:dw|

OpenStudy (skullpatrol):

|dw:1360227493388:dw|

OpenStudy (skullpatrol):

Can you please explain why?

OpenStudy (anonymous):

because the lines are perpendicular?

OpenStudy (anonymous):

well?

hartnn (hartnn):

yes, correct . its last option.

OpenStudy (anonymous):

Thank you! :)

hartnn (hartnn):

welcome ^_^

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