The questions doesn't make sense. An angle isn't a parallelogram. Parallelograms are types of shapes while an angle are to rays.
A right angle.
Normally, a parallelogram does not have a right angle.
A rectangle.
All the angles of a rectangle are right angle. This is not necessarily true of a parallelogram. There are many other differences that arise from this difference.
A parallelogram, in general, has no right angles.
angle sum of a parallelogram
two (2)
Yes a parallelogram with a right angle is a square.
parallelogram
A square is a type of parallelogram.
The questions doesn't make sense. An angle isn't a parallelogram. Parallelograms are types of shapes while an angle are to rays.
A right angle.
A parallelogram with one right angle has four of them. The name for this figure is a rectangle.
No, a parallelogram is made from four lines whereas an obtuse angle comprises two lines.
No, it does not. But an angle and the angle opposite it are always equal.
That would depend on the angle next to it.