well it depends on if its the rough draft you can if its okay with your teacher. on your final draft you need to indent on the next line.
Border
About 4 or 5 paragraphs if each paragraph are 6-8 lines, font size 12
ten
Paragraphs typically consist of 3-5 lines, but there can be exceptions based on the content and formatting. It's important to consider readability and cohesion when determining the length of a paragraph.
yes,
margins
The lines formed around paragraphs are called "borders." In graphic design and word processing, borders can be used to visually separate content, enhance readability, or emphasize specific sections of text. They come in various styles, colors, and thicknesses, depending on the design preferences.
Lines formed around paragraphs are typically referred to as "borders." In design and typography, borders can be used to visually separate sections of text, enhancing readability and organization. They can be styled in various ways, including solid, dashed, or dotted lines, and may also come in different colors and thicknesses to suit the overall aesthetic of a document or layout.
...a frame, a margin, a box.
Stanzas. Stanzas are groups of lines within a poem that are separated by a space. They are similar to paragraphs in prose writing and are used to organize the poem's content and structure.
As well as the lines, character, and paragraphs
Essays are not confined to "lines" such as is poetry. Here's a brief framework though: An essay is generally considered to be a minimum of five paragraphs, and five sentences per paragraph. That makes a minimum of twenty-five sentences. keep in mind this is a jumping off point and a general framework. What you do with it is your own style, your voice.