No. Normally, two lines will uniquely identify a plane, unless they happen to be parallel. If you add a third line, it will usually not be in the same plane.
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Not quite. Two lines that meet will uniquely identify a plane. But you can have lines that are neither coplanar nor parallel.
For example, consider a cube and think of the line defined by the front bottom and one of the back verticals. Neither parallel, nor coplanar.
If at least two of the three lines are parallel, the three lines will not form a triangle.
They are ALWAYS coplanar! This is because the definition says so! You have to read it first, in order to get the answer!
No, non-coplanar lines are not skew. Skew lines are non-coplanar lines that do not intersect and are not parallel. Non-coplanar lines are simply lines that do not lie in the same plane. Skew lines, on the other hand, are non-coplanar and not parallel, making them a specific subset of non-coplanar lines.
No, they always are From Wikipedia.org, "The World's Encyclopedia" when I searched coplanar In geometry, a set of points in space is coplanar if the points all lie in the same geometric plane. For example, three distinct points are always coplanar; but four points in space are usually not coplanar. Since 3 points are always coplanar. A point and line are always coplanar
Three points are, but not four.
No, not always. Skew lines are never coplanar, but parallel lines are.
If at least two of the three lines are parallel, the three lines will not form a triangle.
Parallel lines in Euclidean space are always coplanar.
They are always coplanar in Euclidean geometry.
yes. three lines can coplaner.
Yes.
No. They could be parallel.
Yes.
Parallel lines are ALWAYS coplanar.
They are ALWAYS coplanar! This is because the definition says so! You have to read it first, in order to get the answer!
No but they are always coplanar.
This is a nonsense question. Any three point are always coplanar.