Where the principle directions - East, West, North & South are at right angles to the sides of the plot - such plots are called regular plot. Divide the plot into nine parts as shown, the central are and the directions are indicated in the plot.

Where the principle directions - East, West, North & South are not at right angles but at the corners to the sides of the plot - such plots are called skewed plot. Divide the plot into nine parts as shown, the central are and the directions are indicated in the plot.