Which term describes a shape curved outward?

Which term describes a shape curved outward?

• A. Flat
• B. Convex
• C. Cylindrical
• D. Spherical

Answer: (B)

Convexity is the idea behind a shape curving outward. A convex shape bulges outward with no inward dents, and any straight line drawn between two points inside the shape stays inside it. That outward bulge is what “curved outward” captures in everyday terms, so convex is the best fit. A flat surface has no curvature to speak of, so it doesn’t describe outward bending. A cylindrical surface curves in one direction but isn’t a complete outward bulge in all directions. A sphere is curved outward in every direction and is a specific convex example, but the general description that fits most outward-curving shapes is convex.

Convexity is the idea behind a shape curving outward. A convex shape bulges outward with no inward dents, and any straight line drawn between two points inside the shape stays inside it. That outward bulge is what “curved outward” captures in everyday terms, so convex is the best fit. A flat surface has no curvature to speak of, so it doesn’t describe outward bending. A cylindrical surface curves in one direction but isn’t a complete outward bulge in all directions. A sphere is curved outward in every direction and is a specific convex example, but the general description that fits most outward-curving shapes is convex.