In 3D modeling, edges are straight lines connecting two vertices, and faces are flat or curved surfaces bounded by edges.
- **Edges**: Act as basic structural lines, linking vertices to form the model’s framework. They define the outline and shape, serving as boundaries for faces. - **Faces**: Usually polygonal (e.g., triangles, quadrilaterals) or curved, these surfaces enclose space within connected edges. They determine the model’s surface appearance and structure.
Together, edges and faces construct the 3D model’s surface, enabling its coherent 3D form.