There is no special angle and so it does not have a specific name.
Rhombus and a trapezoid A trapezoid may have a right angle and a square is also a rhombus, so the kite is the only quadrilateral that can't have a right angle.
A square.
Such a rhombus is not possible as it would not have all its sides equal. Or you can keep all angles right angles and call it a square.
Either a rhombus or a square, depending on whether it has a right angle...
It's a rhombus...
Rhombus, or square if there are any right angles
rhombus
There is no specific name for such a shape.
There is no specific name for such a quadrangle.
There is no specific name, but "right-angled polygon" will suffice.
It could be a kite, a trapezium, a chevron or just an irregular quadrilateral with one right angle and no specific name.