rectangle
their are 4 straight lines on a quadrilateral
No
A quadrilateral with only one pair of parallel lines is called a trapezoid.
A quadrilateral doesn't have to have any pairs of parallel lines. It depends what kind of quadrilateral you are talking about... Rectangle- Yes (2 pairs) Square- Yes (2 pairs) Trapezoid- Yes (1 pair) Parallelogram- Yes (2 pairs) Rhombus- Yes (2 pairs)
rectangle
Yes. A quadrilateral is any plane figure bounded by four straight lines. A parallelogram has both pairs of opposite sides parallel and is therefore a special kind of quadrilateral.
A regular quadrilateral has 4 lines of symetry
A trapezium is a quadrilateral with two parallel lines.
their are 4 straight lines on a quadrilateral
No
A four-sided quadrilateral having two lines of symmetry is a rectangle
Most of the time.If a quadrilateral contains no parallel lines or two pairs of parallel lines then it is not a trapezium.
A quadrilateral with only one pair of parallel lines is called a trapezoid.
A quadrilateral doesn't have to have any pairs of parallel lines. It depends what kind of quadrilateral you are talking about... Rectangle- Yes (2 pairs) Square- Yes (2 pairs) Trapezoid- Yes (1 pair) Parallelogram- Yes (2 pairs) Rhombus- Yes (2 pairs)
A quadrilateral cannot have just 3 lines of symmetry. If it has three, then it must have 4 and is a square.
A quadrilateral. (There isn't a more specific word for it.)