Triangular Numbers Observe how each successive triangular number is formed from the previous one. 1) Find the next four triangular numbers 2) Write the nth term of the sequence of the triangular numbers. 1 2 3 3 6 4 10
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Triangular Numbers Observe how each successive triangular number is formed from the previous one. 1) Find the next four triangular numbers 2)
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How are triangle numbers formed?
Triangular numbers are numbers that make up the sequence 1, 3, 6, 10, . . .. The nth triangular number in the sequence is the number of dots it would take to make an equilateral triangle with n dots on each side. The formula for the nth triagular number is (n)(n + 1) / 2.