In geometry, a tetrahedron (plural: tetrahedra or tetrahedrons) is a polyhedron composed of four triangular faces, three of which meet at each corner or vertex. It has six edges and four vertices. The tetrahedron is the simplest of all the ordinary convex polyhedra and the only one that has fewer than 5 faces. The tetrahedron is the three-dimensional case of the more general concept of a Euclidean simplex.
6 Vitamins And Minerals That Boost Brain Power. 1  1.Thiamine (B1) 2  2. Folic acid (B9) 3  3. Ascorbic acid (vitamin C) 4  4. Calcium. 5  5. Magnesium. 6  6. Zinc. 7  Also Watch A Video On: Top 4 Healthy Foods to Boost Your Brainpower. 8  Conclusion.
2. Vitamin B1. Vitamin B1, or thiamin, is also a water soluble vitamin that helps to break down carbohydrates into glucose, which the body uses for energy. ItÃ¢â¬â¢s also very important to maintain a healthy nervous system as well as a positive mental attitude.