What type of ladder stands independently without support?

A stepladder is designed to stand independently without requiring any additional support. It typically features a set of steps and has a hinged design that allows it to open into an A-shape, providing stability when in use. The design includes a wide base that helps distribute the user's weight evenly across the legs, making it safe for various tasks, such as reaching higher areas for painting, repairs, or any other work where elevation is necessary.

In contrast, an extension ladder, while useful for reaching elevated areas, relies on being leaned against a surface for support and cannot stand without being propped up. A platform ladder also requires a stable base for setup, providing a broad platform to work from, but it is not as commonly used in situations requiring a standalone ladder. Lastly, a folding ladder is typically used for storage or transport and may not be designed specifically for independent standing.