It can be a trapezium, kite, arrowhead, or a general quadrangle. Squares and rectangles also have one right angle - they have more that 1, but that still means they have 1.
only right tringles or HL triangles have at least 1 right angle
how do you draw a quadrangle that has at least 1 right angle.
no
trapezoid
No.
yes every parallelogram has at least 1 right angle
trapezoid
Yes, I can.
No. A trapezoid need not have any right angles.
A square has to have all 4 right angles, by definition
A triangle can have a right angle, but it isn't regular if it does. Rectangles aren't regular, but have four right angles. Squares are regular quadrilaterals, and have four right angles. No other regular polygon has any right angles.