sometimes
If a quadrilateral has two pairs of opposite congruent sides, then the quadrilateral is a parallelogram.
No. The congruent sides need not be parallel.
A parallelogram. Opposite sides are parallel and congruent.parallelogram is a quadrilateral with two sets of parallel sides. The opposite sides of a parallelogram are of equal length, and the opposite angles of a parallelogram are congruent. The three-dimensional counterpart of a parallelogram is a parallelepiped.Parallelogram - A quadrilateral whose opposite sides are parallel
A parallelogram has opposite sides and angles congruent which means of equal measure.
A parallelogram. A rhombus, rectangle and square are special cases of a parallelogram.
If a quadrilateral has two pairs of opposite congruent sides, then the quadrilateral is a parallelogram.
A quadrilateral with both pairs of opposite sides congruent is a parallelogram.
Theorem A: A quadrilateral is a parallelogram if its opposite sides are congruent. Theorem B: A quadrilateral is a parallelogram if a pair of opposite sides is parallel and congruent. Theorem C: A quadrilateral is a parallelogram if its diagonals bisect each other. Theorem D: A quadrilateral is a parallelogram if both pairs of opposite angles are congruent.
Then, the opposite sides are congruent.
No, you need both pairs of opposite sides to be congruent (i.e. the same size) to be a parallelogram.
The Opposite Sides Parallel and Congruent Theorem states that if a quadrilateral has a pair of opposite sides that are parallel and congruent, then the quadrilateral is a parallelogram.
always
No. The congruent sides need not be parallel.
A parallelogram has two pairs of congruent sides, and the opposite sides are congruent.
Parallel
No, it is not.
Yes that is correct.