Introduce vs Presented - What's the difference?

As verbs the difference between introduce and presented

is that introduce is to cause (someone) to be acquainted (with someone else) while presented is past tense of present.

having a specified presentation, or a presentation with specified properties.

(introduc)

(of people) To cause (someone) to be acquainted (with someone else).

To make (something or someone) known by formal announcement or recommendation.

To add (something) to a system, a mixture, or a container.

To bring (something) into practice.

* {{quote-magazine, date=2013-10-05, volume=409, issue=8856, magazine=(The Economist)

, title= The widening gyre , passage=First introduced in Letchworth Garden City in 1909, the roundabout

(-)

(mathematics, of a group) Having a specified presentation, or a presentation with specified properties.

(head)

(present)