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Mathematics 9 Online
OpenStudy (anonymous):

Which undefined terms are needed to define parallel lines?

OpenStudy (kymber):

What are the undefined terms?

OpenStudy (anonymous):

point, line ... line,plane... coplanar,line.. point,complanar

OpenStudy (kymber):

And what are parallel lines? Lines? :P

OpenStudy (aravindg):

a reference line :P

OpenStudy (anonymous):

wha

OpenStudy (anonymous):

Please type coherently.

OpenStudy (kymber):

The undefined terms are point, line, plane, aren't they? And parallel lines are... lines! :D

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