It should be understood that the arch can have not only a semicircular shape.
There are many species.
For example, a classic type is a semicircular arc. The arch made according to the rules of the Romanesque style has rounded edges. It is used in the design of wide openings, often such arches are made after eliminating double doors. There are arches equipped with a glass phrama. Framug is made of matte, transparent glass or stained glass. For exotic styles, an arch in the form of a trapezoid is used.