A square
A polygon with 2n sides (n>1) can have opposite angles congruent.
its a shape
rectangle
A rhombus is not defined as a congruent angle; rather, it is a type of quadrilateral where all four sides are of equal length. In a rhombus, opposite angles are congruent, and adjacent angles are supplementary. Therefore, while angles in a rhombus can be congruent, the shape itself is not classified as a congruent angle.
No. A trapezoid is a 4-sided flat shape with straight sides that has a pair of opposite sides parallel. The opposite angles not congruent.
A parralelogram
polygon
How about a square or a rectangle
a trapeziod
Yes. All sides of a rhombus are the same length, but there of two sets of equal opposite angles, which cannot all be equal, or the shape is a square.
A square or a rectangle perhaps?
A shape with no right angles but is still a quadrilateral is called a rhombus. A rhombus has four sides of equal length and opposite sides that are parallel to each other. Although its angles are not right angles, they are all congruent.