A geometric star shape is concave. A star that is in the sky is convex.
No, a concave equilateral pentagon is not possible. In a concave polygon, at least one interior angle must be greater than 180 degrees, which would make it impossible for all sides to be of equal length while maintaining the necessary geometric properties of a pentagon. Thus, an equilateral pentagon must be convex.
Concave, because you can connect the corners from the outside.
concave
A concave line is a line that caves in.
A geometric star shape is concave. A star that is in the sky is convex.
pole is the geometric center of the reflecting surface.
The opposite of convex is concave. Concave shapes have an inward curve, while convex shapes have an outward curve.
plano concave
Concave, because you can connect the corners from the outside.
Concave is a property of [irregular] polygons. A parallelogram cannot be concave.
no concave mirror is in shape of concave mirror
concave=in convex=out
concave
His glasses have a concave lens.
Rectangle
concave