Arris is the architectural term for which feature?

Arris is the architectural term for which feature?

• A. Internal corner
• B. External corner or sharp edge
• C. Recessed joint
• D. Rounded edge

Answer: (B)

An arris is the sharp edge that forms where two surfaces meet, especially on the outside of a structure. It’s the crisp external corner or edge, not a rounded detail. This distinguishes it from an internal corner (the inside intersection of two faces), a recessed joint (a joint set back from the surface), or a rounded edge (a softened, curved transition). In plastering and masonry work, the arris is the pronounced edge you want to stay sharp and true along exterior corners.

An arris is the sharp edge that forms where two surfaces meet, especially on the outside of a structure. It’s the crisp external corner or edge, not a rounded detail. This distinguishes it from an internal corner (the inside intersection of two faces), a recessed joint (a joint set back from the surface), or a rounded edge (a softened, curved transition). In plastering and masonry work, the arris is the pronounced edge you want to stay sharp and true along exterior corners.