Scribner's engineers' and mechanics' companion : comprising United States' weights and measures : mensuration of superficies and solids ... the mechanical powers ... steam and the steam engine (1848)
Scribner, J. M · New York : Huntington and Savage · leaf 36
e of three sides and angles is called a triangle, andreceives particular denominations from the relations of its sides andangles. 1. An equilateral triangle is that whose three sides are equal. 2 The height of a triangle is the length of a perpendicular drawnfrom one of the angles to the opposite… … d b PROBLEM I. To -find the Area of a Four-sided Figure, whether it be a parallelogram, sqvare, rhombus, or rhomboid. Rule.—Multiply the length by the breadth or perpendicular height,and the product will be the area. Example.—What is the area of a parallelogram, abed, whoselength, c d, is 12 feet 3…
Mechanical engineering · Weights and measures
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