In the most common form of bowling, known as ten-pin bowling, there are 10 pins arranged in a triangular formation at the end of the lane. These pins are set up in four rows: one pin in the first row, two in the second, three in the third, and four in the fourth, forming an equilateral triangle
. Other variations of bowling use different numbers of pins, such as five-pin bowling, which uses 5 pins arranged in a V shape, and candlepin or duckpin bowling, which also use 10 pins but with different shapes and sizes
. However, when people refer to bowling generally, they most often mean ten- pin bowling with 10 pins.
