four sides and four corners
a square and a rhombus
It is a square as square has 4 sides and all of them are equal. Also it has 4 corners.
Both statements are not always true. A square is a rectangle (a shape four sides and four corners which are all right angles) but a rectangle is not necessarily a square (a shape with four equal sides and four corners that are all right angles).
A square box
A quadrilateral.
The figure that has 4 sides and 3 corners is a triangle-shaped figure that has one of its corners truncated or cut off. This figure is called a "truncated triangle" or a "triangle with a missing corner" and has a unique shape that can be used in geometric and mathematical applications.
There is no such shape. If it has two sides meeting, it also has to have a corner. A triangle has three sides and three corners, and a square has four sides and four corners. There is nothing in between.
A QUADRILATERAL has four corners and four sides, along with four angles. These do not need to be congruent (equal) but they can be.
No shape can have two corners
Four corners and sides
A Square