Quadrangle isn't a polygon. Quadrilaterals are polygons. One's with possibilities of no right angles include:
Kite
Parallelogram
Rhombus
Complex Quadrilateral
Simple Quadrilateral
Concave Quadrilateral
Convex Quadrilateral
Tangential Quadrilateral
Cyclic Quadrilateral
Bicentric Quadrilateral
Trapezium
Isosceles Trapezium
3-Sided-Equal Trapezium
The right answer is a rectangle.
A rhombus.
You are a rhombus.
You are a rhombus.
You are a square?
A rhombus.
trapazoid
It is a rhombus
A rhombus.
Rhombus
a rhombus or parrellegram
A rhombus perhaps?