"Equilateral triangle" Quotes from Famous Books
... to the latter question; was it probable that such so-called sub-divisions should be two, or three, or how many? I do not think it will be wise to insist upon any such arithmetical curiosity as a perfect number; nor on such a toy as an equilateral triangle and its properties; nor on the peculiar aptitude for sub-division in every thing, to be discerned in a beginning, a middle, and an end; nor in the consideration that every fact had a cause, is a constancy, and produces a consequence: neither, to draw any inferences ... — The Complete Prose Works of Martin Farquhar Tupper • Martin Farquhar Tupper
... ballistic test as prescribed by the Bureau of Ordnance, Navy Department. The test plate, irrespective of its thickness, is to be backed by thirty-six inches of oak or other substantial wood. Near the middle region of the plate an equilateral triangle will be marked, each side of which will be three and one-half calibers long. The lower side of the triangle will be horizontal. Three shots will be fired, the points of impact being as near as possible ... — Scientific American Supplement, No. 803, May 23, 1891 • Various |