If it has any, it's a rectangle (or in some instances, a square)
yes a rectangle is a parralelogram because it has four parralel lines and has four right angles
A rectangle
No, unless they're all right angles. Otherwise it has two pairs of equal angles.
four, well two pairs of angles (they're matched
A parralelogram
If you mean parallelograms (not parralelogram), the answer is yes, it is possible but very unlikely.
None.Also a parallelogram (not parralelogram!) has no lines of symmetry (not semmety!)
Four
If one angle of a p/gram is 90o, the other three MUST also be 90o. (In a p/gram each pair of adjacent angles total 180o)
A rectangle must have four right angles in addition to two pairs of parallel edges. So some rectangles are parallelograms but not all are.
4 right angles, no other angles.
It can, but it doesn't have to.If it does, then it's a special parallelogram, called a "rhombus".If the rhombus has right angles inside, then it's a special rhombus, called a "square".Both of these things are still parallelograms.