Q:
# What are triangular numbers?

**A triangular number is one that can be represented as a regular, triangle-shaped grid of equally spaced points having one element in the first row and an additional element in each row thereafter, according to Wolfram MathWorld.** So the second row has two elements, the third row has three, etc.

Credit:
Caspar Benson
Getty Images

The first element in the first row represents the first triangular number. The three elements in the first two rows constitute the second triangular number. They are added to the three elements in the third row to obtain the next triangular number, which is six. Those six are added to the four points in the fourth row, resulting in a total of ten, which is the next triangular number. This same pattern continues to repeat itself so that the first twelve triangular numbers are 1, 3, 6, 10, 15, 21, 28, 36, 45, 55, 66 and 78.

Learn more about Numbers-
Q:
## How can you find consecutive odd numbers?

A: Consecutive odd numbers are any two odd numbers with only one even number between them. To find a pair of consecutive odd numbers when given their sum, set... Full Answer >Filed Under: -
Q:
## How do you find prime factorization?

A: To perform the prime factorization of a number, determine the prime numbers that, when multiplied, equal the original number. Then, make a prime factor pyr... Full Answer >Filed Under: -
Q:
## What does 777 mean?

A: The number 777 has strong meanings in numerology, which is the spiritual study of numbers, and its meaning deal with both introspection and creative self-e... Full Answer >Filed Under: -
Q:
## What are some facts about the number 16?

A: The number 16 is an even number and is the only integer that has the form xy=yx, where x and y are different numbers (2 and 4). Another fact is that the ba... Full Answer >Filed Under: