What is the sacred triangular space within a Roman home or temple for worship and veneration?

The sacred triangular space within a Roman home or temple designated for worship and veneration is known as the sacrum or sacellum. This area served as a focal point for religious observances and rituals, essentially providing a dedicated space where offerings could be made, and deities or ancestral spirits could be honored.

In many Roman temples, the sacellum would typically house the cult statue of the deity being worshipped, while also being a space for the priestly activities associated with the rites. The triangular design symbolizes the connection between the divine and the earthly realm, enhancing its sacred significance.

In contrast, the other terms refer to different aspects of Roman architecture. An altar is primarily a structure for making offerings but does not define a sacred space in itself, while the cella is the inner chamber of a temple that houses the deity's statue, but it is not exclusively designated for worship. The tholos refers to a round building often used for ceremonial purposes, which can vary in context and doesn't specifically denote the triangular sacred space described.