It is a rectangle. Just picture it. 4 right angles and 2 sides that are the same length.
A rectangle.
A four-sided figure with two pairs of parallel sides the same length and four right angles is called a square.
Square
square
triangle
Any figure with 6 sides is a Hexagon. If all sides of the figure are of the same length, and all interior angles are 120° then you have a regular hexagon.
Four sided figure. All sides are the same length. All angles are equal. Four right angles. Both diagonals are equal.
triangle
A square, rectangle, or quadrilateral
rhombus
rhombus (although the angles can technically be right angles as well)