A concave molding approximately quarter round is known as what?

A concave molding approximately quarter round is known as what?

• A. Cavetto
• B. Torus
• C. Ovolo
• D. Fillet

Answer: (A)

The key idea is naming by the direction and shape of the curve in the molding’s cross-section. A concave, shallow curve that approximates a quarter of a circle is called cavetto. It’s an inward-curving molding often seen under cornices and along entablatures in classical and related architectures, giving that characteristic inward quarter-round profile. By contrast, ovolo is a convex rounded edge, torus is a larger convex rounded form, and fillet is a flat, straight strip with no curvature. So the concave quarter-round molding is cavetto.

The key idea is naming by the direction and shape of the curve in the molding’s cross-section. A concave, shallow curve that approximates a quarter of a circle is called cavetto. It’s an inward-curving molding often seen under cornices and along entablatures in classical and related architectures, giving that characteristic inward quarter-round profile. By contrast, ovolo is a convex rounded edge, torus is a larger convex rounded form, and fillet is a flat, straight strip with no curvature. So the concave quarter-round molding is cavetto.