A dormer is typically used on a house built in what style? ranch duplex Federal Cape Cod

## Step 1<br />A dormer is a type of roof extension that creates a small room within the roof slope. This feature is typically associated with certain architectural styles.<br />## Step 2<br />The Federal style of architecture, which originated in the United States in the late 18th century, is known for its use of dormers. These dormers were used to add more space and light to the attic area of the house.<br />## Step 3<br />The other options, ranch, duplex, and Cape Cod, are different styles of architecture that do not typically feature dormers.