An irregular quadrilateral doesn't need to have any right angles. It's possible
for it to have one or two right angles, but no more than two of them.
some do, some don't, irregular just means that the shape doesn't have all it's angles and sides the same length.
no
A parallelogram, a rhombus, kites, arrowheads, trapezium and irregular quadrilaterals. However, some kites, arrowheads, trapezium and irregular quadrilaterals can have one (or more) right angles.
quadrilaterals
ALL quadrilaterals have 4 angles
Always 360 degrees
A kite or some irregular quadrilaterals.
Not always because its possible to have a trapezoid with 2 right angles and an obtuse angle plus an acute angle and the 4 interior angles must add up to 360 degrees
the two types of quadrilaterals that have four right angles are a square and a rectangle
The two quadrilaterals that have four right angles are rectangles and squares.
Rhombuses and trapezoids have no right angles by definition.
The quadrilaterals with all angles congruent are rectangles and squares. They are the only quadrilaterals in which all four angles are right angles.
Some kites and irregular quadrilaterals. Certainly not a trapezium or parallelogram.