A rectangle is always a 4 sided polygon known as a quadrilateral.
A trapezoid is never a rectangle but they are both 4 sided quadrilaterals
no because a rectangle has four 90* angles. so it would be never.
Trapezoids are never a rectangle because it doesn't have any right angles
The diagonals of a rectangle are never perpendicular but the diagonals of a square are perpendicular
A polygon is a closed figure with 3 or more sides/angles, and the lines must always be straight. A circle isn't a polygon. Quadrilaterals are always polygons but polygons are not always quadrilaterals. So the answer is "sometimes."
Diagonals are normally equal in lengths