In the UK and the US, we are still too primitive to have (a) agreed on a definition of Trapezium and (b) decided whether or not parallelograms/rectangles/squares are or are not special cases. read more
A scalene trapezium has no line of symmetry. An isosceles trapezium has one line of symmetry which is the line that passes through the midpoints of the parallel sides. read more
it has 1 line of symmtery * * * * *Normally a trapezium will have no lines of symmetry. read more
The number of lines of symmetry in a regular polygon is equal to the number of sides a regular polygon has. Some figures like scalene triangle and parallelogram have no lines of symmetry. Lines of symmetry in letters of the English alphabet: Letters having one line of symmetry: A B C D E K M T U V W Y have one line of symmetry. read more