Yes. They have two pairs.
Squares do, triangles don't.
not neccessarily. it can have parallel lines, but it doesn't have to. a kite for example, has no parallel lines, but it is a quad. but it can, such as rhombuses, squares, rectangles, parallelograms, and trapezoids
All squares have two pairs of parallel lines. That's four lines, but they are not all parallel to each other.
Rectangles and squares
Set squares are useful for drawing parallel lines and perpendicular lines.
Squares have 4 90 degree angles and 2 sets of parallel lines and 4 congruent sides. A rectangle has the angles and parallel lines. A parallelogram has the parallel lines. A rectangle is most similar, however there are more geometric shapes with some similarities to a square.
squares, rectangles
Parallelograms have parallel diagonals (these include squares, rectangles, rhombi, an trapezoids). Parallel lines are lines with the same slope that could carry on infinitely without intersecting. A parallelogram can have 1 or 2 sets of parallel lines.
parralelagram, which includes rectangles and squares
No because a rectangle is parallel lines and a square is four right angles.
Squares are required to have TWO pairs of parallel lines, whereas trapezoids are required to have only ONE pair of parallel lines. Hope this helps!
Since by definition a parallelogram is a quadrilateral with two sets of parallel lines, a rectangle is a parallelogram. Since we know that squares are rectangles, we can conclude that squares are parallelograms.