A quadrilateral is any shape with four sides; angles can be acute or obtuse. A perfect square is the only quadrilateral with only right angles.
Square.
A rectangle.
Rectangle
Rhombus: A Rhombus has four congruent sides but no right angles.
square
A square.
Yes. Eg. Square, Rectangle. Yes, and there is a special name for such a quadrilateral. It is called a rectangle. If all four sides are equal in length as well as having four right angles, then it is called a square.
A regular quadrilateral is a square. It is a four-sided figure with all sides being the same length and all angles equal (right angles).
A rectangle is also a polygon, a parallelogram, and a quadrilateral with four right angles.
A general quadrilateral. No special name.
Both square and rectangle fit this description.