Thursday, February 27, 2020

TRIANGULAR NUMBERS

A triangular number or triangle number counts objects arranged in an equilateral triangle. The nth triangular number is the number of dots in the triangular arrangement with n dots on a side, and is equal to the sum of the n natural numbers from 1 to n

Triangular numbers are a pattern of numbers that form equilateral triangles. The formula for calculating the nth triangular number is: T = (n)(n + 1) / 2.

The triangular numbers sequence contains all the triangular numbers in order. The first 10 numbers of the triangular number sequence are: 1, 36, 10, 15, 21, 28, 3645, 55, …

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