a small light in the sky, making the shape of a equiangular triangle then shooting away at a high rate of speed.

This was a night sighting in a backyard in San Pedro CA., at the Los Angeles Harbor and Cabrillo Beach area.  A small light in space that looked like a faint star was just south east of being over head.  At first it was stationary, but then started to move in a perfectly straight line for a few seconds(if you hold your thumb out at arms length the distance moved would be about 2 thumbs width), then instantly changed direction in exactly 80 degrees from its previous course and again went perfectly straight for a few seconds traveling the same distance, then once more instantly changing direction 80 degrees from its previous course. It moved back to it's original location then a few second later took off like a shooting star torwards the horizon.  The were no obstructions overhead such as clouds, electrical wires, or planes.
Date of sighting is approximate.  PD