Rectangle.
A rhombus would seem to fit the given description
A rhombus for example
Rectangle
A four side polynomial with two pairs of opposite side congruent and parallel as well as four right interior angle.
Rectangle.
It has to have 4 right angles and both pairs of the side congruent.
A shape that has 2 pairs of equal sides and no right angles is a kite or a parallelogram. In a parallelogram, each side is equal to the one directly opposite; in a kite, the equal sides are adjacent to one another.
It could be a kite or a rhombus. Or, of course, a pentagon with two pairs of equal sides and a different fifth side, or a hexagon, or, ...
A rhombus would seem to fit the given description
It is a square or a rectangle
A symmetric trapezium.
A rhombus for example
Rectangle
A four side polynomial with two pairs of opposite side congruent and parallel as well as four right interior angle.
a rectangle. It wouldn't be a square because that has 1 pair of 4 equal side but a rectangle has 2 pairs of equal sides and 4 right angles.
Yes they are. Or they could have three pairs of congruent sides, or they could have one pair of congruent angles and two pairs of sides. As far as a triangle goes, if you have at least three pairs of congruent sides or angles they are congruent. This answer is wrong. The triangles are only similar. For congruent trisngles we have the following theorems = Side - side - side, Side - Angle - side , Angle - angle - side, Right triangle - hypotenuse - side.