It is convex because you can draw a straight line between any two points on it without having to take your pen off of the sign.
It can be convex or concave.
A rhombus is an equilateral parallelogram. As such, it is neither concave nor convex.
Rectangle
convex
A rhombus is an equilateral parallelogram. As such, it is neither concave nor convex.
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
It can be convex or concave.
convex and concave
Lenses: converging (convex) and diverging (concave) Mirrors: concave and convex
concave=in convex=out
convex
A rhombus is an equilateral parallelogram. As such, it is neither concave nor convex.
The Rear view mirrors are convex The Headlights are concave
The opposite of concave is convex. A concave surface curves inward, while a convex surface curves outward.
Rectangle
concave
concave