1. convex - Noun
2. convex - Adjective
Rising or swelling into a spherical or rounded form; regularly protuberant or bulging; -- said of a spherical surface or curved line when viewed from without, in opposition to concave.
A convex body or surface.
Source: Webster's dictionaryA convex quadrilateral is cyclic if and only if opposite angles sum to 180°. Source: Internet
A convex function is a real-valued function defined on an interval with the property that its epigraph (the set of points on or above the graph of the function) is a convex set. Source: Internet
A convex plus a concave lens (f 1 > 0 > f 2 ) produces a positive magnification and the image is upright. Source: Internet
Algorithms seeAlso In a linear programming problem, a series of linear constraints produces a convex feasible region of possible values for those variables. Source: Internet
A cyclic polygon is any convex polygon about which a circle can be circumscribed, passing through each vertex. Source: Internet
A lens is biconvex (or double convex, or just convex) if both surfaces are convex. Source: Internet