<p>The <b>Pythagorean theorem</b> is often expressed as the following equation:</p>

<p><var>a<sup>2</sup></var> + <var>b<sup>2</sup></var> = <var>c<sup>2</sup></var></p>

<p>Here <var>c</var> represents the length of the hypotenuse, while <var>a</var> and <var>b</var> represent the lengths of the other two sides.</p>

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