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Geometry by Jeremy J. Gray, Matthew F. Esplen, David A. Brannan

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Appendix 2: A Primer of Vectors and Vector Spaces

Vectors

A vector is a quantity that is determined by its magnitude and direction. A scalar is a quantity that is determined by its magnitude. A vector in image2 or in image3 can be represented by a line whose length is a measure of the magnitude (or length) of the vector and whose direction is the same as that of the vector. A vector represented by a line segment from A to B is often written as image.

In 2 the vectors ...

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