Vastu Shastra was formally used since ages. It is a traditional Hindu system where people used it for their design based on allignments direction. As per the Scientist it is Superstitous but Hindu believe for making the Temples and nowadays it has been widely used for Desinging home and offices or for any land purpose. There are many principles of vastu followed by people, among them one is Mathematical calculations. Maana and Aayadi are the other forms.
This is considered while designing the building or interior of home or office. Uttaraayan (North) & Purva (East) are considered as the best direction for the entrance of the building or resident entrance or office entrance as per the Vastu Shastra. Direction are considered as an importance factor. Below are the details: