Absolutely; a parallelogram is a form of quadrilateral, in that it has four sides. If the four sides come in two sets of parallel lines, you have a parallelogram.
The answer depends on the shape of the quadrilateral and the form in which that information is given: for example, lengths of sides and angles, coordinates of vertices.
A rectangle is a 4 sided quadrilateral having two pairs of parallel lines of different lengths
All supplementary angles do not form a linear pair. The opposite angles of any quadrilateral inscribed in a circle (a cyclic quadrilateral) are supplementary but they are not a linear pair. However, all linear pair are supplementary.
Not necessarily. A linear pair of angles must be supplementary but supplementary angles need not form a linear pair. For example, the opposite angles of a cyclic quadrilateral are supplementary but they are (by definition) not next to one another.
90 degrees
The word 'cyclic' is the adjective form of the noun cycle.
a quadrilateral where each angle is a right angle
Absolutely; a parallelogram is a form of quadrilateral, in that it has four sides. If the four sides come in two sets of parallel lines, you have a parallelogram.
The answer depends on the shape of the quadrilateral and the form in which that information is given: for example, lengths of sides and angles, coordinates of vertices.
A rectangle is a 4 sided quadrilateral having two pairs of parallel lines of different lengths
All supplementary angles do not form a linear pair. The opposite angles of any quadrilateral inscribed in a circle (a cyclic quadrilateral) are supplementary but they are not a linear pair. However, all linear pair are supplementary.
Not necessarily. A linear pair of angles must be supplementary but supplementary angles need not form a linear pair. For example, the opposite angles of a cyclic quadrilateral are supplementary but they are (by definition) not next to one another.
A quadrilateral as described is a parallelogram. If the angles between the two sets of parallel lines are 90 degrees, the shape is a rectangle, a special form of parallelogram.
It is a kite whose diagonals are perpendicular to each other and form 4 right angles.
Yes, any quadrilateral can be used.
vertex