Essential revision or learning for a wealth of disciplines like architecture, physics, engineering or design. Understanding the qualities of circles, lines and cones together with a thorough explanation of vectors, provide an excellent foundation to further study.

# Introduction to vectors

A vector is a quantity that has both a magnitude (or size) and a direction. Both of these properties must be given in order to specify a vector completely. Adding and subtracting vectors and using them in geometry is described. Video tutorial 33 mins.