Triangle (Fallout 3)

The Triangle is an item in Fallout 3, only usable as Rock-It Launcher ammo or for decoration.

It cannot fit a full set of billiard balls inside of it, only taking about 4 balls.

Locations
They are pretty difficult to find in the wasteland as there aren't many of them and they are mostly found on pool tables.
 * One in the Rivet City marketplace.
 * One in the Talon Company Outpost near the Arlington Library.
 * One in the Arlington Library, in the Media Archives
 * One at Tenpenny tower, in the Federalist Lounge
 * One in Paradise Falls, in the Barracks.