Bourdon's Arithmetic: Containing a Discussion of the Theory of Numbers

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J.B. Lippincott & Company, 1858 - Arithmetic - 248 pages
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Page 124 - For the purpose of measuring angles, the circumference is divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; each minute into 60 equal parts called seconds.
Page 124 - CIRCLE is a plane figure bounded by a curved line, all the points of which are equally distant from a point within called the centre; as the figure ADB E.
Page 119 - It is the weight of a cubic centimetre of distilled water at the temperature of 39'2 Fahr., or 4 Centigrade.
Page 88 - MEASURE. 12 Inches make 1 Foot. 3 Feet . . 1 Yard. 6 Feet . . 1 Fathom. 5 j yards . . 1 Rod or Pole.
Page 89 - CUBIC MEASURE 1728 cubic inches = 1 cubic foot 27 cubic feet = 1 cubic yard...
Page 117 - ... electric phenomena may be measured in terms of time, mass, and space only, referring briefly in each case to a practical method of effecting the observation.
Page 236 - There is an island 73 miles in circumference, and 3 footmen all start together to travel the same way about it ; A goes 5 miles a day, B 8, and C 10 ; when will they all come together again ? Ans. 73 days.
Page 184 - If the product of two numbers is equal to the product of two other numbers, either two may be made the means, and the other two the extremes of a proportion.

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