1. (Zoology) either of a pair of sensory appendages that arise from the mouthparts of crustaceans and insects. 2. (Zoology) either of a pair of tactile organs arising from the head or anterior end of certain annelids and molluscs. [C19: from French, from Latin palpus a touching]
Convex, meaning curving out or extending outward (compare concave), may refer to: Convex set in mathematics Convex function in mathematics convex polygon a polygon in which no line segment between two points on the boundary ever goes outside the polygon.
A regular polygon has all angles equal and all sides equal, otherwise it is irregular. A convex polygon has no angles pointing inwards. More precisely, no internal angle can be more than 180Â°. If any internal angle is greater than 180Â° then the polygon is concave. (Think: concave has a cave in it)