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Counting 1
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6:17
Khan Academy
Sarath Penumuru
Why 36 is a triangular square number
In this fun math exploration, we dive into the fascinating world of triangular and square numbers. Using square blocks, we demonstrate how triangular arrangements can sometimes be rearranged into perfect squares. Through visual examples, we discover that 36 is both a triangular number and a square number! This hands-on approach makes abstract ...
3 months ago
Triangular Numbers Explained
The ancient Greeks labeled certain numbers as triangular numbers. The numbers 1, 3, 6, 10, 15, 21, and so on are triangular numbers. Describe a procedure to determine the next five triangular numbers without drawing the figures. Is 72 a number in this series? Explain how you determined your answer.
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