# Proof without Words: Sum of Integers

by Ian Richards (University of Minnesota)

Mathematics Magazine
March, 1984

Subject classification(s): Integers | Number Theory | Algebra and Number Theory
Applicable Course(s): 4.3 Number Theory

A visual derivation of the formula for the sum of the first $n$ integers is presented.

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Capsule Course Topic(s):
Number Theory | Numbers With Special Forms or Properties
Number Theory | Numbers With Special Forms or Properties, Sums of Powers