It probably took longer to type those questions than it does to look the rules up online.
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World Pool-Billiards Association (WPA)
Pool Billiards - The Rules of Play
Effective 1/1/08
3.2 Eight Ball Rack
The fifteen object balls are racked as tightly as possible in a triangle, with the apex ball on the foot spot and the eight ball as the first ball that is directly below the apex ball. One from each group of seven will be on the two lower corners of the triangle. The other balls are placed in the triangle without purposeful or intentional pattern.
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Billiards Congress of America (BCA)
WORLD STANDARDIZED RULES: 8-BALL
Effective January 1, 2006
4.3 RACKING THE BALLS
The balls are racked in a triangle at the foot of the table with the 8-ball in the center of the triangle, the first ball of the rack on the foot spot, a stripe ball in one corner of the rack and a solid ball in the other corner.
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