One pair.
None
Just one. And the other pair cannot be parallel.
Does a parallelogram have one pair of opposite parallel sides? No. If only a pair of opposite sides is parallel, then it forms a trapezium and when two pairs are parallel, then it forms a parallelogram.Narasimham
Two pairs.
2 pairs
Two pairs.
2 pairs
2 pairs, same as any other parallelogram
none.
1 pair of parallel line
a rhombus has 4 equal sides
The NEVER cross each other