A single object cannot be congruent. Congruence is a property of two or more objects.
An impossibility. By definition a quadrilateral with 4 congruent sides must have congruent adjacent angles.
Square
A quadrilateral has 2 pair of congruent angles and 4 congruent sides. What is the name of the quadrilateral
always
Not necessarily. They can, but don't have to. A quadrilateral which does have congruent sides is called a rhombus.
False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.
It cannot. There is no way to draw a quadrilateral where 3 sides are congruent.
square
A square would fit the given description.
4 sides
No. The congruent sides need not be parallel.
rectangle