The mausoleum in the village of Karabaglar Azerbaijan belongs to the type of tower. It was built of bricks. The forms of the mausoleum are sculptural and plastic due to the fact that its walls are formed by twelve half-cylinders (corrugations), closedly placed on a twelve-sided stone base.
The corrugations are covered with glazed brick ornament representing Kufic inscriptions, made at an angle of 45 ° to the horizon, which gave the ornament pattern dynamism. Along two perpendicular axes – four entrance (light) openings with a rectangular frame. The corrugations end with a low frieze with an epigraphic ornament of a smaller drawing made in the naskh handwriting. The covering of the building has not been preserved.
At any time of the year and day in different lighting conditions, the mausoleum makes a very effective impression due to the plasticity of its forms and polychrome interpretation.
The crypt of the mausoleum is the underground part of the structure – a dodecahedron. However, the floor plan is cruciform with a vaulted ceiling. The upper room is a hollow dodecahedral prism of slender proportions, on the sides of the dodecahedron there are shallow niches that end with pointed arches.
The proportions of the Karabaglar mausoleum have undergone a detailed study, which made it possible to state that its proportions are subordinate to the module. At the same time, the authors of the study took for the module the width of the entrance apertures of the mausoleum, equal to 85.5 cm.
L. S. Bretanitsky, comparing the data of the analysis of the proportions of the Karabaglar mausoleum with the results of studies of the architectural module by other scientists – D. B. Khazanov, K. S. Kryukov, V. M. Morozov, concludes: “It is difficult to talk about the results of further study of this issue, however, there is no reason to believe that the proportioning system in the architecture of medieval Azerbaijan was associated with any complex mathematical calculations, numerous derivatives, irrational numbers, etc. “
Medieval muhaidis, land surveyors, calculators in the countries of the East, judging by the reports of Omar Khayyam and the studies of B.A.Rosenfeld, A.P. Yushkevich and G.P. Matvievskaya, did not make a difference between numbers and irrational values.
Computing technology based on the sexagesimal system, as established by the research of M.I.Medovoy, was quite high. This gives grounds to assert that the determination of the geometric parameters of the Karabaglar mausoleum for the medieval Azerbaijani architect did not present any difficulties, however, when transferring the project to nature, modular coordination could take place.
Perhaps this explains the coincidence of proportions of medieval buildings of the 10th-15th centuries. with one or another module. But there is no doubt that in the harmonization of spatial architectural forms of this era, the primacy belonged to skillful geometric techniques.
In the theory and practice of architects, the geometric concept triumphed. This can be seen when considering the proportions of a number of architectural monuments and theoretical treatises of scientists-encyclopedists of the era.