Q. What is plagiarism?

All of the following are considered plagiarism:

• turning in someone else's work as your own
• copying words or ideas from someone else without giving credit
• failing to put a quotation in quotation marks
• giving incorrect information about the source of a quotation
• changing words but copying the sentence structure of a source without giving credit
• copying so many words or ideas from a source that it makes up the majority of your work, whether you give credit or not

from http://www.plagiarism.org/plagiarism-101/what-is-plagiarism​