Concave, because you can connect the corners from the outside.
concave
concave
convex
A trapezoid is convex.
A non convex is a concave and a convex is differently shaped
The 'face' of the weld may be slightly convex, flat, or slightly concave.
An arrow can have both concave and convex surfaces, depending in its design.
concave
It can be convex or concave.
concave is inward, convex is outward concave is inward, convex is outward
convex and concave
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
The mold for a concave object is convex.The mold for a convex object is concave.
we polish concave and convex with alimunium
Concave
concave=in convex=out
convex
Convex ~