# Triangular Number

A number that can make a triangular dot pattern. Each side in the triangle containes the same number of dots.

- 1 = 1 dot
- 2 = 3 dots
- 3 = 6 dots
- 4 = 10 dots
- 5 = 15 dots
- etc.

A number that can make a triangular dot pattern. Each side in the triangle containes the same number of dots.

- 1 = 1 dot
- 2 = 3 dots
- 3 = 6 dots
- 4 = 10 dots
- 5 = 15 dots
- etc.