should you indent examples when writing a essay

The beginning of this paragraph is indented. Standard paragraph indentation is about five spaces or one-quarter to one-half of an inch, depending on which style guide you follow. In online writing, if your software doesn’t allow indentation, insert a line space to indicate a new paragraph.
In a composition, an indentation is a blank space between a margin and the beginning of a line of text.

Are you meant to indent when you start a new paragraph?
I’m not an expert here but I thought I would illustrate two different styles of paragraphs:

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One purpose of using MLA format is to streamline the writing process and establish a consistent and uniform way of presenting material. For this reason, there are specific guidelines you’ll need to follow when formatting your paper. The general idea is to use a 12-point font, have 1-inch margins, double-space the paper, include page numbers, and to include your personal information in the upper-left hand corner. Your paper should look like this:
This sample paper shows how the first page of a paper written in MLA is formatted. Note the header information in the upper-left corner, the last name and page numbers in the upper-right corner, the double spaced text, and indentations that begin each paragraph.

Block format is typically used for business letters.
In block format, the entire text is left aligned and single spaced. The exception to the single spacing is a double space between paragraphs (instead of indents for paragraphs).

• The only paragraph NOT indented is the Abstract.
• If the Instructor requires an Abstract, it should be left aligned, with no indent.

Abstract:

References:

http://english.stackexchange.com/questions/8941/is-an-indentation-needed-for-a-new-paragraph
http://le.ac.uk/library/academic-skills
http://courses.lumenlearning.com/suny-engcomp1-wmopen/chapter/text-mla-document-formatting/
http://rasmussen.libanswers.com/faq/33178
http://askus.baker.edu/faq/216872
http://maceospice.com/in-789-essay-on-english-happiness