In church architecture, a semi-circular or semi-polygonal space terminating at the axis and housing an altar is called what?

In church architecture, a semi-circular or semi-polygonal space terminating at the axis and housing an altar is called what?

• A. Apse
• B. Narthex
• C. Chancel
• D. Transept

Answer: (A)

An apse is the semicircular or polygonal termination of a church along its main axis that houses the sanctuary and altar. It sits at the liturgical east end of the building, projecting beyond the nave and often vaulted, sometimes with radiating chapels around it. This ending along the axis is what defines the apse as the space described. The other terms refer to different parts of the plan: the narthex is the entrance vestibule, the transept is the crossing arm that gives a cruciform shape, and the chancel is the sanctuary area around the altar and choir—often located near the apse but not itself the terminating end.

An apse is the semicircular or polygonal termination of a church along its main axis that houses the sanctuary and altar. It sits at the liturgical east end of the building, projecting beyond the nave and often vaulted, sometimes with radiating chapels around it. This ending along the axis is what defines the apse as the space described. The other terms refer to different parts of the plan: the narthex is the entrance vestibule, the transept is the crossing arm that gives a cruciform shape, and the chancel is the sanctuary area around the altar and choir—often located near the apse but not itself the terminating end.