The browser used by the Answers community is useless at graphics and so I cannot show you some example. There are infinitely many shapes with only right angles which are not polygons. One example is a side view of a staircase. An "H" section, "I" section, "T" section (commonly used to describe steel girders), or a "Maltese Cross" are all examples of shapes with only right angles that are not quadrilaterals.
Finally, the question does not require the shape to have only square angles. There are many more shapes with two or more right angles and other angles as well.
A square or quadrilateral.
A quadrilateral. There are numerous quadrelaterals including a square, a rectangle, a diamond etc
a square, quadrilateral or a cube.
a quadrilateral
A quadrilateral based pyramid.
A square or quadrilateral.
A general quadrilateral: it has no specific name.
A quadrilateral. There are numerous quadrelaterals including a square, a rectangle, a diamond etc
a square, quadrilateral or a cube.
That is, a quadrilateral with no square corners is not a rectangle or a square. This is because by definition, a rectangle and a square have four square corners, so if a quadrilateral has no square corners, then it cannot be a rectangle or a square.
a quadrilateral
rectangle
Quadrilateral
A square.
A quadrilateral based pyramid.
A quadrilateral is a four-sided figure that has straight sides and no curves. It can be a square and any shape that has four sides that connect, hence four angles and four vertices. Examples of quadrilaterals are a square, rectangle, parallelogram, rhombus.A quadrilateral is a 4 sided shape such as a square, rectangle, rhombus, parallelogram ... etc
It is a square