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Do all quadrilaterals have opposite sides parallel?
No, only trapeziums (1 pair), parallelograms and squares (both pairs)
Why does a trapezoid have parallel lines?
Well, a trapezoid is a quadrilateral. All regular quadrilaterals have 2 pairs of parallel sides. Ex, squares rectangles and trapezoids
Do parallelograms have parallel sides?
Yes. A Parallelogram is a quadrilateral that has two pairs of parallel sides which are opposite each other and of equal length, though the pairs may be of different length to each other. If the angles are all 90° then the parallelogram is also a rectangle. If the angles are all 90° AND all sides are equal then the parallelogram is also a square. All squares are rectangles, but not all rectangles are squares; Similarly all squares are rhombuses but not all rhombuses are squares And all rhombuses, and thus squares, are parallelograms, but not all parallelograms are rhombuses (nor squares).
What has two pairs of parallel sides and all sides are equivalent?
A square or a rhombus has two pairs of parallel sides and all sides are equivalent.
How many pairs of parallel sides are in a prarallelogram?
All parallelograms have two pairs of parallel sides.
Do all squares have two pairs of opposite sides that are parallel?
Yes.
Does a rectangle have to be long?
No, it just has to have two pairs of parallel sides. By this definition all squares are also rectangles.
Do all quadrilaterals have opposite sides parallel?
No, only trapeziums (1 pair), parallelograms and squares (both pairs)
Why does a trapezoid have parallel lines?
Well, a trapezoid is a quadrilateral. All regular quadrilaterals have 2 pairs of parallel sides. Ex, squares rectangles and trapezoids
Do parallelograms have parallel sides?
Yes. A Parallelogram is a quadrilateral that has two pairs of parallel sides which are opposite each other and of equal length, though the pairs may be of different length to each other. If the angles are all 90° then the parallelogram is also a rectangle. If the angles are all 90° AND all sides are equal then the parallelogram is also a square. All squares are rectangles, but not all rectangles are squares; Similarly all squares are rhombuses but not all rhombuses are squares And all rhombuses, and thus squares, are parallelograms, but not all parallelograms are rhombuses (nor squares).
What has two pairs of parallel sides and all sides are equivalent?
A square or a rhombus has two pairs of parallel sides and all sides are equivalent.
How many pairs of parallel sides are in a prarallelogram?
All parallelograms have two pairs of parallel sides.
Do all squares have 2 pairs of parallel sides?
Yes, and they are equal in length and meet at right angles which is 90 degrees.
Two quadrilaterals that have two pairs of parallel sides each In addition all four of the sides are congruent in both shapes?
The two quadrilaterals are squares.
A quadrilateral with 2 pairs of parallel sides?
A quadrilateral with two pairs of parallel sides is a parallelogram.
What quadrilaterals have both pairs of opposite sides parallel?
All parallelograms have. That category includes the special cases of rectangles, squares, and rhombera.
What is a parallellogram with 4 right angles but not 4 equal sides?
A rectangle :pParallelograms are quadrilaterals that have pairs of opposite sides that at parallel to each other.The only parallelograms with right angles are squares and rectangles. And squares have all congruent sides.
