Rectangle is actually a type of polygon but given the frequency of its use, most vector graphic file formats support a specific rectangle object. Squares could be created using either the ...
There are many ways to identify a colour when creating vector graphics. Three of the most common ways are: by naming the colour e.g. red, provided that the name you use is supported by the vector ...
It's not free, like the options below, but it's the best tool money can buy. Open source vector graphics package Inkscape is staggeringly powerful, and is the best free Adobe Illustrator ...