How to flat shade a polygons 3D model for beginners?

Beginners can flat shade a polygon 3D model by turning off smooth shading in their 3D software and setting each face to a single solid color or texture. Flat shading makes each polygon look uniform (no gradient) by ignoring adjacent face blending—disable features like "smooth normals" (Blender) or "Phong shading" that create rounded, realistic effects. For practice, try a simple cube in Blender: select the model, go to the "Object Data Properties" tab (triangle icon), and under "Normals," uncheck "Smooth Shading"—this instantly gives a flat, faceted look to start with.