An angled extension is a type of structural support that is used to extend the length of a building or other structure. It is usually made of metal and is designed to be attached at an angle to the existing structure, allowing for additional support and stability. The term 'ELL' is an abbreviation for the word 'ELLIPSE, ' which is a shape that is similar to a circle but with two different radii. An angled extension is often referred to as an ELL because it has a curved shape.