How were pendentives used to combine a dome with a basilica?

Pendentives are architectural elements that facilitate the transition from a square space to a circular dome, effectively combining the two structures. In a basilica, the square layout of the nave is often enhanced by a dome above it, and pendentives are employed at the corners of the square to support the dome's base. This ingenious design not only provides structural stability but also allows for the creation of expansive interior spaces, enhancing the aesthetic and functional aspects of basilicas in Byzantine architecture.