Definitions for

**"Pascal's triangle"**A triangular array of numbers made up of the coefficients of the binomial expansion.

Pascal's triangle is an array of numbers that is constructed by beginning with a row of two ones: 1 1. Each new row after the starts and ends with a one, and the other numbers are formed by adding the numbers above and on either side of them: [ DMTA, p. 322, Precalculus and Discrete Mathematics, UCSMP, p. 610

A triangular array of binomial coefficients.