A Textbook on Sheet-metal Pattern Drafting, Volume 1

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Page 7 - A sphere is a solid bounded by a curved surface, every point of which is equally distant from a point within called the center.
Page 3 - Thirty days hath September, April. June, and November; All the rest have thirty.one, Save February, which alone Hath twenty.eight; and one day more We add to it one year in four.
Page 1 - A Circle is a plane figure bounded by a curved line every point of which is equally distant from a point within called the center.
Page 1 - Weight is used by apothecaries and physicians in compounding dry medicines. TABLE. 20 Grains (gr.} = 1 Scruple, . . sc., or 3. 3 Scruples = 1 Dram, . . dr., or 3 . 8 Drams = 1 Ounce, . . oz., or . 12 Ounces = 1 Pound, . . Ib., or ft,.
Page 15 - If a product consists of equal factors, it is called a power of one of those equal factors, and one of the equal factors is called a root of the product. The power and the root are named according to the number of equal factors in the product. Thus, 3X3, or 9, is the second power, or square, of 3; 3 X 3 X 3, or...
Page 5 - The area of a parallelogram is equal to the product of its base and its height: A = bx h.
Page 5 - RULE. — From half the sum of the three sides subtract each side separately ; multiply the half -sum and the three remainders together ; the square root of the product is the area.
Page 25 - PROBLEM 18. — To inscribe a regular polygon of any number of sides in a given circle.
Page 14 - Four quantities are in proportion when the ratio of the first to the second is equal to the ratio of the third to the fourth.
Page 1 - In any right triangle the perpendicular from the vertex of the right angle on the hypotenuse divides the triangle into two triangles each similar to the given triangle.

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