How do seismologists locate the epicenter of earthquakes?

4 answers

https://www.google.com/search?source=hp&ei=aebhXJzQOZHytAWJk7iIBw&q=How+do+seismologists+locate+the+epicenter+of+earthquakes%3F&oq=How+do+seismologists+locate+the+epicenter+of+earthquakes%3F&gs_l=psy-ab.12..0i30.6786.6786..7593...0.0..0.131.131.0j1......0....2j1..gws-wiz.....0.D5q2-nFPEto
I already went to that website and it did not say exactly how they do it.
How many different web sites did you study carefully?
I studied the first 5