A trapezoid.
trapeziod
A trapezoid
A trapezoid
Squares always have two pairs of opposite sides that are parallel. A square cannot have just one pair of parallel sides. A quadrilateral (four-sided figure) with exactly one pair of parallel lines is a trapezoid.
A trapezoid.
trapeziod
A trapezoid
A trapezoid
Squares always have two pairs of opposite sides that are parallel. A square cannot have just one pair of parallel sides. A quadrilateral (four-sided figure) with exactly one pair of parallel lines is a trapezoid.
Then, the opposite sides are congruent.
If all pairs of opposite sides are parallel, each pair must be equal.
An isosceles trapezium
sometimes
Parallel
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.
Every quadrilateral has opposite sides, but I'm assuming you probably are asking about a trapezoid.