A quadrangle is a 4 sided shape.
A quadrangle is a closed 2-dimensional shape bounded by four straight lines.
A kite or, if concave, an arrowhead or chevron.
A quadrangle is a shape with 4 angles, such as a square, rectangle, or paralellogram. A four sided shape is called a quadrilateral.
A quadrangle is any 4 sided shape and 360 degrees in a square.
It could look like an arrowhead (or delta).
Upturned.
A trapezoid
Right angles are congruent and so look the same wherever they are.
A rectangle with three irregular angles.
A rhombus for example
It does not because, by definition, it must have four sides: it cannot have two.