Definitely a quadrilateral.
However, if the short sides are equal in length, and the long sides are equal in length then it could be a Kite, Rectangle or Parallelogram, depending upon whether the two short sides are next to, or opposite to, each other, and in the latter case if the angles are all 90° or not.
Also, if two of the sides are parallel but the other two are not, then it could be a trapezium.
A parallelogram or a rectangle
Without knowing their arrangement or the angles involved, all you can say is that it is a quadrilateral (4 sides). If the long sides are opposite, parallel, and equal in length -- and if the short sides are opposite, parallel, and equal in length -- you have a parallelogram. If all of the angles of the parallelogram are right angles, you have a rectangle.
A quadrilateral. If the short sides are equal in length and the long sides are equal in length then it is a kite. Otherwise it could be a trapezium (eg one with sides 4, 5, 16, 13) or it is an irregular quadrilateral.
a rectangle
A rectangle is a four-sided figure with two long sides and two short sides. The two long sides are the length of the rectangle. The two short sides are the width of the rectangle.
a paper
A parallelogram or a rectangle
Because it takes a lot more than just "2 long sides and 2 short sides" to make a rectangle. -- The 2 long sides have to be equal. -- They have to be opposite each other, not next to each other. -- The 2 short sides have to be equal. -- They have to be opposite each other, not next to each other. -- At least one of the angles where two sides come together has to be 90 degrees.
A parallelogram
A Rectangle!
NO You see that a rectangle has 2 long sides and 2 short side THAT IS HOW TO PROVE THE answer
Without knowing their arrangement or the angles involved, all you can say is that it is a quadrilateral (4 sides). If the long sides are opposite, parallel, and equal in length -- and if the short sides are opposite, parallel, and equal in length -- you have a parallelogram. If all of the angles of the parallelogram are right angles, you have a rectangle.
A square has 4 equal sides. A rectangle has 2 short sides of equal length and 2 long sides of equal length
A quadrilateral. If the short sides are equal in length and the long sides are equal in length then it is a kite. Otherwise it could be a trapezium (eg one with sides 4, 5, 16, 13) or it is an irregular quadrilateral.
A kite shape is one example -- 2 long sides adjacent to each other & 2 short sides adjacent to each other.
a rectangle
Hexagon