A ladder consisting of a single section is called a _________ ladder?

A ladder consisting of a single section is referred to as a straight ladder. This type of ladder is designed with a fixed length and typically does not have adjustable components. Straight ladders are commonly used in firefighting and other applications where they provide direct access to elevated areas, allowing firefighters to quickly reach windows, rooftops, or other essential points during an emergency.

In contrast, extension ladders can be adjusted to various lengths, making them versatile for reaching different heights. A-frame ladders feature a hinged design that allows them to stand on their own, while collapsible ladders are designed to be compact and portable, often allowing them to be stored easily when not in use. Each of these other types serves specific purposes, but they do not fit the definition of a single-section ladder.