Yes, they can also have right, acute, and obtuse angles.
It's not that easy to answer because a straight angle is like a straight line and I think that it would be on either every or none of the shapes that I would know of. Any shape has a right, obtuse,or acute angle. So, I am guessing that no shapes have straight angles. or that a straight angle is in every angle which is not true.
angle sum of a parallelogram
Yes a parallelogram with a right angle is a square.
A square is a type of parallelogram.
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.
Normally, a parallelogram does not have a right angle.
That would depend on the angle next to it.