the right side
convex
This means the vented of a circle. It is the radius of the circle that is perpendicular to a line tangent to any point on the concave side of a smooth curve.
Concave, because you can connect the corners from the outside.
concave
A concave circle
the right side
convex
The definition of concave is a curved like a segment of the interior of a circle or hollow sphere.
This means the vented of a circle. It is the radius of the circle that is perpendicular to a line tangent to any point on the concave side of a smooth curve.
In physics, 'concave up' refers to the shape of a curve or surface that opens upward, resembling a cup that faces upwards. This typically signifies a region where the rate of change of a function is increasing. It is often associated with the idea of a positive second derivative.
A concave shape curves inward like the inside of a bowl or spoon. It is the opposite of convex which curves outward. Concave surfaces can be found in various objects such as caves, lenses, and mirrors.
The circle is not a polygon because it is not composed of straight line segments.A star (outline shape) is actually an irregular concave decagon (5 pointed) or dodecagon (6 pointed).
This depends on your definition. One could say that circles ({p in R^n : d(p,m) = r}) are concave, while (open) disks ({p in R^n : d(p,m) < r}) are convex.
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
Definitions found on www.dictionary.com Concave: a curved like a segment of the interior of a circle or hollow sphere; hollow and curved Convex:having a surface that is curved or rounded outwardsBoth concave and convex mirrors are spherical mirrorsconcave mirrora spherical mirror whose reflecting surface is curved inwards is called a concave mirrorconvex mirrora spherical mirror whose reflecting surface is curved outwards is called a convex mirror
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.