Feng Shui is all about balance and harmony. In this line, ancient texts recommend dwellings to be either square or rectangular. When a house is not in the recommended shape it is deemed to have missing corners. The effects of this missing corner could be quite ominous for the residents. The impact can be felt in the corresponding ba gua area. For example, in broad terms, if the missing corner is located in the Southeast sector, this could impact the manifestation of wealth for the family or will have an adverse effect on the eldest daughter of the family, or both. Thankfully this affliction can be remedied. One of the ways to do this is to create a functional outdoor space that effectively draws in that missing corner as part of the house. Obviously, Feng Shui practice is more nuanced. The amount of information available online is not only confusing but could be quite dangerous. With a serious affliction like this, your best bet is to consult a professional.