The meaning of CONCAVE is hollowed or rounded inward like the inside of a bowl. How to use concave in a sentence.

Concave Downward is also called Concave, or sometimes Convex Upward. Finding where ... Usually our task is to find where a curve is concave upward or concave downward: A line drawn between any two points on the curve won't cross over the curve: Let's make a formula for that!

Jan 14, 2025 · concave (comparative more concave, superlative most concave) Curved like the inner surface of a sphere or bowl. (geometry, not comparable, of a polygon) Not convex; having at least one internal angle greater than 180 degrees.

Look up concave or concavity in Wiktionary, the free dictionary.

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curved like a segment of the interior of a circle or hollow sphere; hollow and curved. Compare convex ( def 1 ). Geometry. (of a polygon) having at least one interior angle greater than 180°. …

Here is what you need to know about the second derivative as it relates to concavity of a function: A function f (x) is concave (or concave down) if the 2nd derivative f’’ (x) is negative, with f’’ (x) < 0. Graphically, a concave function opens downward, and water poured onto the curve would roll off.

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A concave polygon is defined as a polygon with one or more interior angles greater than 180°. It looks sort of like a vertex has been 'pushed in' towards the inside of the polygon. Note that a triangle (3-gon) can never be concave. A concave polygon is the opposite of a convex polygon. See Convex Polygon.

Mar 5, 2025 · A set in Euclidean space is convex set if it contains all the line segments connecting any pair of its points. If the set does not contain all the line segments, it is called concave. A convex set is always star convex, implying pathwise-connected, which in turn implies connected.