Enter triangular number statement


  

Calculate triangular number 8

Triangular numbers form a triangle shape

Triangular number formula

Tn  =  n(n + 1)
  2

Given n = 8, we have:

T8  =  8(8 + 1)
  2

T8  =  8(9)
  2

T8  =  72
  2

T8 = 36


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How does the Triangular Number Calculator work?
Free Triangular Number Calculator - This calculator determines the nth triangular number. Generates composite numbers.
This calculator has 1 input.

What 1 formula is used for the Triangular Number Calculator?

Tn = n(n + 1)/2

For more math formulas, check out our Formula Dossier

What 4 concepts are covered in the Triangular Number Calculator?

formula
a fact or a rule written with mathematical symbols. A concise way of expressing information symbolically.
number
an arithmetical value, expressed by a word, symbol, or figure, representing a particular quantity and used in counting and making calculations and for showing order in a series or for identification. A quantity or amount.
triangle
a flat geometric figure that has three sides and three angles
triangular number
Example calculations for the Triangular Number Calculator
  1. 30th triangular number
  2. 45th triangular number

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