Trapizium is only known just to have 1 right angle.
parallelogram
A square
A rectangle is a four-sided figure with a right angle at each corner. A rhombus is a figure with four equal sides. A figure that is both a rectangle and a rhombus is a square.
As defined, a quadrilateral. Could be others, but need to know about parallel and/or equal sides...
The shape can only be a rectangle! A rectangle is a four-sided 2-dimentional figure, where every angle is a right angle, opposite sides are parallel, but the 4 sides are NOT equal.
A rhombus is any four-sided figure whose sides are equal. A square is any rhombus with a right angle in it.
An irregular quadrilateral.
approx 51.43
Well for a four sided figure the sum of the angles must equal 360 degrees
A kite :) /\ \/
A four sided figure with four equal sides and no right angles is a diamond, or a rhombus. If it had four right angles, it would be a square.
Such a figure is called a square. Actually only one right angle is enough to force the the other angles to be right, and if three sides are equal, that forces all sides in such a figure to be equal. Exercise: Prove that any 4-sided figure( called a quadrilateral in math books) with three equal sides and one right angle is a square.
Each angle has a measure of 120 degrees
A four-sided shape with one right angle is a quadrilateral. There is no more specific term, unless it has more than one right angle or has equal sides.