Final answer:
In HTML, tags that include both opening and closing tags are called paired tags. They are used to mark up elements that have a start and end point, enclosing the content within them.
Step-by-step explanation:
HTML Tags with Both On and Off Tags
In HTML, tags that include both opening and closing tags are called paired tags. Paired tags are used to mark up elements that have a start and end point, and they enclose the content that falls between the opening and closing tags. For example, the <strong> tag is a paired tag that is used to make text bold. Here's an example:
<strong>This text will be bold</strong>
Some other examples of paired tags in HTML include <p> for paragraphs, <em> for emphasized text, and <h2> for headings, among others.