Skew coordinates are a way to represent points in a space that are slanted instead of perfectly straight. This can make it easier to measure distances and angles between points, and it also makes it easier to draw shapes on the slanted space. For example, when drawing a square on a piece of paper, the three sides that are not directly horizontal or vertical are called "skew lines". The four corners of the square will have a set of "skew coordinates" that tells you where the corners are located in the slanted space. It's like an extra set of numbers used in addition to the regular 'x' and 'y' coordinates.