Particles that form a sedimentary rock by accumulating are called sediment. Before being deposited, sediment was formed by weathering and erosion in a source area, and then transported to the place of deposition by water, wind, ice, mass movement or glaciers which are called agents of denudation.
A cuboid is a box-shaped solid object. It has six flat sides and all angles are right angles. And all of its faces are rectangles.
First and fore most a Trapezoid is a quadrilateral which is a 4 sided plane shape. 1  It has 4 lines. 2  It is a closed shape. 3  Two of the lines are parallel.  It is a simple quadrilateral - meaning the sum of it's angles is 360 1  degrees. A Trapezoid is a Trapezoid and cannot be named anything else.