Vectors that sum to zero are coplanar and coplanar vectors sum to zero.
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They are unit vectors in the positive directions of the x and y axes.
skew lines are noncoplanar lines, which means they aren't parallel and they also don't intersect skew lines do not intersect and are not coplanar
A matrix is a field of numbers with rows and columns (see example below). They can reperesent many different things and have numerous applications, especially in computer science. They can also be used in physics, as columns are often vectors that are analyzed together for one reason or another. Linear Algebra involves the study of matrices. Example: | 2 3 8 | | 5 6 1 | | 4 2 7 |
Sir Isaac Newton.
Two lines that are not coplaner exist on two different planes. These lines do not and will not intersect by simple definition. It is however, when speaking of three or more lines, when the possibility that two or more of them may intersect.