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.
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.
Normally, a parallelogram does not have a right angle.