true
A parallelogram.
Diagonally opposite pairs of angles will always be equal, but the only time all angles in a quadrilateral parallelogram are equal is when that shape is a rectangle.
Yes. A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.
A parallelogram is such a shape.
A quadrilateral is a parallelogram if it has two pairs of (opposite) sides that are parallel.
False. If both pairs of opposite angles of a quadrilateral are congruent then the quadrilateral is a parallelogram.
true
A parallelogram.
Yes, because a square is a parallelogram
A parallelogram is a geometric quadrilateral with two pairs of parallel sides. The opposite sides and opposite angles are equal in length.
Diagonally opposite pairs of angles will always be equal, but the only time all angles in a quadrilateral parallelogram are equal is when that shape is a rectangle.
Yes. A parallelogram is a quadrilateral in which both pairs of opposite sides are parallel.
If a quadrilateral has two pairs of opposite congruent sides, then the quadrilateral is a parallelogram.
A parallelogram is such a shape.
A quadrilateral is a parallelogram if it has two pairs of (opposite) sides that are parallel.
A quadrilateral with both pairs of opposite sides congruent is a parallelogram.
Yes.Although the definition of a parallelogram is "a quadrilateral with both pairs of opposite sides parallel", the only way for a quadrilateral to include opposite sides of equal length is if the included angles are the same, and hence the sides are parallel.(Hint : draw a diagonal to a parallelogram. You can show that one of the two triangles formed is the mirror image of the other, which immmediately proves that each pair of opposite sides is equal.)