According to traditional fung shui principles, a room or office should be square or rectangular in shape, as this will allow chi to circulate evenly throughout. Rooms with irregular or sharp corners will have negative energy accumulating in the unusual areas, causing occupants to feel unsettled. For instance, your bedroom or living room may be mostly rectangular but a triangular section, associated with fire, attached to the end would be extremely yang in nature. To rectify this, demarcate the rest of the room from the irregular sector by using a solid wooden screen, bookshelf or cabinet. You may also install thick, indoor curtains to symbolically shield off the problematic sector. For living rooms, a row of plotted plants is a solution. The irregular sector can then be used for storage. Depending on its size, you may be able to use cabinets or doors to cover this space. Using an irregular area of a room for study or relaxation is not advisable as you will be prone to headaches, insomnia, accidents and heart and blood-pressure problems. As the issue is structural, covering the walls of a protruding sector with mirrors (so as to make it 'disappear') will not be effective, nor will painting it a different colour to the rest of the room.