No you can have up to four, but that's it.
No, a quadrilateral does not necessarily have any right angles. If it has a right angle, it will necessarily have four right angles, and will be a rectangle. But not all quadrilaterals are rectangles. As long as a polygon has four sides, it is a quadrilateral. It might have, for example, two angles of 100o and two angles of 80o.
Two pairs of equal sides and four right angles.
rectangle
a rectangle
Paralellagram??
A rectangle is classed as a 4 sided quadrilateral in math.
Rectangle.
A rectangle and a square
ghgvb
A right trapezium or an irregular quadrilateral.
A quadrilateral has four interior angles. It may have two, three, four, or none of them congruent.