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OpenStudy (anonymous):
If three lines intersect at on point, then they are (always, sometimes, or never) coplanar?
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OpenStudy (anonymous):
draw it out and ill try to help
Directrix (directrix):
Draw a picture of a case of three lines intersecting in a single point in a plane. Then, you can consider if the lines can not be coplanar. By the way, three or more lines that intersect in a single point are called "concurrent lines."
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