‘Triangular Reality’ is an actual and virtual structural composition based on triangle meshes. Computer graphic models based on triangle meshes have more processing advantages. Most computer graphics, design, and video game industries are adopting this system, which has also started affecting our physical environment. This piece is a new structural composition based on a triangle mesh composed in its own way. On the same forming logic, another virtual model exists together. The same logic regulates virtual and actual reality, like our living world.