Circles

A circle can be made by dividing it into triangular parts. Each part connects too a center point with two adjacent points on the circumference. As it increases the number of parts, the shape becomes more circular.

Spheres

Similarly, a sphere is made using triangular faces. In 3D, you start with a basic shape like an icosahedron (20 triangular faces) and then subdivide each face to make even more triangles. This process is called tessellation. More subdivisions create an even smoother sphere.

Why Use Triangles?

• Hardware: Gpu's are designed to display triangles very efficiently.
• Simplicity: Triangles are always flat and can be easily processed with algebra.
• Flexibility: Any 3D shape can be approximated using triangles, making them universal building blocks for many computer graphics.
• Ram Efficiency: Triangles require only three vertices to define, making them very ram-efficient.