Most shapes will make use of at least two coordinates, X and Y. In the most common vector graphic file format (SVG), the default starting position is in the top left-hand corner of the drawing area.

A vector can be represented by a line segment ... Triangle ABC is isosceles. X is the midpoint of AB, Y is the midpoint of BC and Z is the midpoint of AC. Write, in terms of \(\mathbf{a}\), ...