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.
What Shape Is A Octagon. A trapezium Edit: Actually that's more like half a hexagon, not an octagon. I don't know if there's a name for half an octagon As it's a five sided shape it's a pentagon, those don't have to have matching angles and sides to be called that, any five sided shape is a pentagon.