Triangular Numbers Explained

The video tutorial explains triangular numbers, which are numbers that can form an equilateral triangle with dots. It describes the sequence of triangular numbers and highlights that each number in the sequence corresponds to the number of dots on each side of the triangle. The video also explains how to calculate triangular numbers by summing consecutive integers and provides practice questions for viewers to solve.

What is a triangular number and how can it be represented?

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Describe the pattern you notice in the sequence of triangular numbers.

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What do you observe about the relationship between the number of dots on each side of the triangle and the position number in the sequence?

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Can you explain how the triangular numbers build upon each other?

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How is the nth triangular number calculated?

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