Which shape does not belong with the others triangle rectangle rhombus or trapezoid?

The shape that does not belong with the others is the rectangle. A triangle, rhombus, and trapezoid are all polygons with specific characteristics - a triangle has three sides, a rhombus has all sides of equal length, and a trapezoid has one pair of parallel sides. However, a rectangle is a special type of parallelogram with all angles measuring 90 degrees, making it distinct from the other shapes listed.