The '360 degree' appraisal method collects feedback-What it is? from whom? about whom?

- It is self-evaluation method .

- It coms form employees or employee's supervison 

-In some cases, feedback from external sources, such as customers and suppliers or other interested stakeholders.

-The results from a360-degree evaluation are often used by the person receiving the feedback to plan for update or in their development.

- Sometimes received and analyzed by business development department.

It is a self evaluation method in which feedback is taken from employee's immediate work circle. Customers and stakeholders can also be asked to provide feedback.

The360 degree feedback appraisal systems collect information from a variety of people with whom the employee has frequent contact. The evaluation asks each participant questions about the employee’s behavior across a broad array of job related competencies. Its confidential nature and broad perspective make this appraisal tool more credible to many employees than traditional performance appraisal systems.

From all level of the firm about all aspects of management.

360 degrees Feedback or Review is the Human Resources' and Occupational Psychology's employee-related alternative for a SWOT analysis (Strengths, Weaknesses, Opportunities & Threats), if you like.

The name symbolizes perfection through feedback; an analogy derived from the mathematical fact that a complete perfect circle (as opposed to an oval) has360 degree.

Such a feedback rounds the circle, since it gathers equally weighting feedback (same diameter length) from the professional's closest circle of people (colleagues, supervisors, customers, subordinates and the person himself/herself).

A process or system which help to understand strength and weaknesses through feedback from people surrounding in workplace.

Good answer by Khatim, I agree with him.

AGREED WITH AMR ABBAS,,,,,,,,,,,,

Agreed to Mr Khatim 

A '360 Degree' feedback appraisal collects the views from people who work with the appraisee, about the appraisee, including subordinates, peers, upline managers; effectively anyone who comes into contact with the appraisee and who is happy to provide constructive feedback about the appraisee's strengths and areas for improvement.