1. If we observe any thing in the universe we always see some shapes. In nature fruits and leaves have different shapes. But did we ever question ourselves that how they are attributed? It is a miracle of nature. Even all the rocks and minerals also have shape and crystalline structures. Scientists call that as crystallography. So animate and inanimate objects do possess some type of structure (Shape). For any object we could see the outer structure, but inherently they are also related to internal atomic structure. In Human too there is a hidden structure, we call it D.N.A. Our ancients also represented it as 3.5 times coiled snakes and the same is being used as medical symbol. In inanimate object too, the atoms are connected within it representing their own shapes. Above all there is a force between them and they are inseparable by normal means with their inter atomic force or bondage. The secret is that outer SHAPE has a relation with the inner shape.
2. Different shapes of leaves produce different form of flowers and fruits. When we separate few petals of flower from bud form surgically then the result would be, the flower may blossom but it would never becomes a Fruit, with a perfect form (shape). It can be inferred that was an unbalance in energy caused disharmony in it can be inferred. Even the Yantras (Geometrical forms) used by Hindu and Islamic heritage, posses some balanced structures, which are used for healing. Let us conclude that the structure and shapes have some power and the yantras have has become healing power houses, which in turn have a relation with human structure. Now we learn about the shapes, which have some thing to do with the human biology. The normal Structures we learn in school the same what we see in nature. [Leaves, Animal shapes etc].
3. The other structures are related to the multiple combinations of the above forms. Obviously as per the above statements these have some strong energy fields which may Help or disrupt human energy due to interaction in them.
Mostly flowers are in the shape of circles and their leaves would be either rectangles connected with triangles or semi-circles. For sustaining life, they indicate the need of water energy and Sun's energy (heat). Nature plays this role of geometry to full fill its requirement. The combination of 9 triangles, 9 circles, one point at top and one Square at bottom makes the miraculous figure known as Sri yantra a geometrical figure works as power house emitting positive energy is a great miracle created by the Indian saints.
Astro Vastu Solution