4
A square.
Since a quadrilateral is a defined as any object with two sets of two parallel lines that form four 90 degree right angles. It would have 2 sets of 2 parallel lines.
parallelogram
True
no, because a quadrlateral has 6 sides and a hexagon has 4
4 right angles, no other angles.
there are no angles
3
Infinite angles. If you are referring to degrees then the answer is 360, but if the question is angles I can get as many angles as I want inside a circle.
It has 6 angles, none of which are right angles.
4 angles
4 angles