4 sides
a trapezoid has 4 vertices
4 sides
Normally none but if it's an isosceles trapezoid it has one
A trapezium doES have 4 angles.
Four
4
1 pair of parallel line
A trapezoid has 1 pair of opposite parallel sides of different lengths
There are 4 sides. It is a quadrilateral.
2 sides
A trapezoid has 1 pair of opposite parallel sides of different lengths
Just one. And the other pair cannot be parallel.