trapeziod or trapezium
The 2D shape which has one line of symmetry is the trapezium.
Pentagons can be symmetrical, but are not always so.
Yes.
A trapezium is always a quadrilateral.
Yes
Never.
yes it has four sides
A trapezium (or trapezoid in some regions) is a four-sided polygon (quadrilateral) that has two sides parallel. The sum of the interior angles in any quadrilateral, including a trapezium, is always 360 degrees. Therefore, the angles in a trapezium add up to 360 degrees.
yes, it's always symmetric
A trapezium. A trapezium. A trapezium. A trapezium.
they are always symmetical