Triangular object,got within 200 feet,stopped in mid air,took off like a rocket and dissapeared,never made any noise.

Seen but did not hear it aproaching from about half a mile away,it proceded to get within 200 feet at about 75 feet off the ground with no noise what soever.It was triangular in shape,dark grey or black in color,with a light on each of it's three tips.It was probably only going 20 mph.Once it got as close it was going to get,it stopped and just hung there in mid air and no noise was present.It stayed there for about 20 seconds or so,then with no noise it proceded to go in a strait line probably at a 45 degree angle towards the horizen,due south.And without slowing down,it shot out at a 90 degree angle at a super fast rate of speed and just plain dissapeared,no noise while this was going on.Me and my buddy were at the end of our street playing when we seen this sighting,we were 14 years old at the time.
Witness indicates that date of incident is approximate.  PD