A quadrilateral, specifically a square or rectangle
A polygon with 2n sides (n>1) can have opposite angles congruent.
Any polygon with 2n sides (n integer) where opposite sides are parallel, will have its opposite angles congruent.
polygon
A square
a polygon that has all angles congruent is an equiangular .....
No, it is not true that in a polygon all sides and angles are congruent. A polygon with all sides congruent is called a regular polygon, but there are also irregular polygons where the sides and angles can vary. For example, a rectangle has congruent opposite sides but not all sides are equal, and its angles are congruent but not all angles need to be equal in other types of polygons. Thus, congruence in sides and angles only applies to regular polygons.
A rectangle is a quadrilateral with opposite sides parallel and congruent and four right angles. If all four sides are congruent, it is a square.
A rectangle is a quadrilateral with opposite sides parallel and congruent and four right angles. If all four sides are congruent, it is a square.
Any polygon with an even number of sides (vertices) in which at least one pair of opposite angles are of the same measure.
A polygon with all interior angles congruent Is known as a regular polygon.
It would be an irregular polygon that has not congruent sides and angles
No. You also need all of the sides to be congruent. For example, a rectangle has four congruent angles, but it is not a regular polygon.