No, but it does have 1 pair of opposite parallel lines of different lengths
no it does not
The only requirement for a trapezoid is that one pair of opposite sides be parallel. There could be trapezoids with a pair of perpendicular lines.
It doesn't need any in order to be a trapezoid. It can have a max of two pairs of perpendicular sides.
Not usually.
No.
It can, but it need not.
No.
perpendicular
Not usually.
The diagonals of an isosceles trapezoid are equal in lengths but are not perpendicular to each other at right angles.
Yes, an isosceles trapezoid is one example.
yes.