Maybe it is Curvilinear rectangle
A two-dimensional shape with one curved side and four straight sides can be created, but there is not specific name for such a shape.
A quadrilateral is a shape with four straight sides. There are no curved sides in a quadrilateral.
Such a shape probably does not have a specific name.
cube
The hexagon has six corners and six sides.
A rectangular gemstone shape is known as an "emerald cut." This cut is often used for emeralds, as well as other gemstones like diamonds, sapphires, and aquamarines. It features a rectangular shape with trimmed corners and step-cut facets.
the vertices are the corners to the shape, so you count the corners to whatever shape.
A better name for "corners" would be angles, but the shape's name would be a hexagon
A cuboid or rectangular prism.
A decagon.
A shape with three linear sides and one curved side can be drawn, but such a shape has no specific name.
An ellipse is the proper name for an oval shape, however, a circle is a closed curved shape similar to an oval shape.
A sphere
A cuboid.
There is no specific name for such a shape.
sphere
A two-dimensional shape with one curved side and four straight sides can be created, but there is not specific name for such a shape.