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The triangular and square numbers
Lili
Created on January 3, 2023
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Triangular numbers
Triangular numbers
What is it?
triangular numbers
A triangular number or triangle number counts objects arranged in a equilateral triangle.
The sequence of triangular numbers, starting with the 0th triangular number is:
All the triangular numbers can make an equilateral triangle, but the aren't necessarily in the table of 3.
square numbers
A square number is an integer that is the square of an integer.
The sequence of square numbers starts with those numbers:
The name square number comes from the name of the shape.