A kite or, if concave, an arrowhead or chevron.
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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.
Well, honey, in a parallelogram, opposite sides are equal in length and opposite angles are equal in measure. So, the most likely side lengths for a parallelogram would be two pairs of sides that are equal to each other. But hey, don't forget, as long as those opposite sides are parallel and those angles are congruent, you've got yourself a good ol' parallelogram.
A rhombus for example
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