Shapes are crucial when it comes to Vastu Shastra. Imagine entering a house without a door or buying a house with an odd shape like triangular or circular. The point here is to emphasize the importance of shapes from a Vastu and astrological perspective. Shapes act like ‘Yantras’ (machinery and portals), storing and exerting energy. Square and rectangular shapes are considered auspicious in Vastu because they distribute energy evenly. An upward triangle is also favorable as it emits positive energy. However, avoid oval, circular, downward triangular, and coffin-shaped mirrors as they are considered inauspicious.