# Right Triangle

## Description

"In any right triangle, the square described on the hypotenuse is equal to the sum of the squares described on the other two sides. If A B C, is a right triangle, right angled at B, then the square described on the hypotenuse AC is equal to the sum of the suares described on the sides A B and B C." — Hallock, 1905

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## Source:

V. I. Hallock *I.C.S. Refrence Library* (Scranton: International Textbook Company, 1905)

Courtesy the private collection of Roy Winkelman