A rhombus (like a diamond), or a parallelogram.
Two pairs of equal length.
Any parallelogram, including rhombus, but not including rectangle or square.
rectangle,square and parallelogram in general.
A shape that has 2 pairs of equal sides and no right angles is a kite or a parallelogram. In a parallelogram, each side is equal to the one directly opposite; in a kite, the equal sides are adjacent to one another.
It's either a parallelogram or rhombus
A parallelogram has 2 sets of parallel sides. The opposite sides are equal in length and opposite angles are equal. Examples of parallelograms are squares, rectangles and rhombuses. You can find the perimeter of a parallelogram by doubling the base+side length.
Two pairs
Two reasons: 1) The interior angles of a parallelogram aren't necessarily 90 degrees. 2) All fours side are not necessarily equal in a parallelogram (we are only guaranteed two pairs of equal sides. Note that all squares are parallelograms, though.
A rhombus for example
none
A parallelogram is a 4 sided quadrilateral and has 2 pairs of opposite parallel sides