An Introduction to Mensuration and Practical Geometry

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Thomas, Cowperthwait & Company, 1848 - 288 pages
 

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Page 50 - The areas of circles are to each other as the squares of their diameters.
Page 19 - Parallel straight lines are such as are in the same plane, and which being produced ever so far both ways, do not meet.
Page 21 - The circumference of every circle is supposed to be divided into 360 equal parts, called degrees ; each degree into 60 equal parts, called minutes ; and each minute into 60 equal parts, called seconds.
Page 94 - As the conjugate diameter is to the transverse, so is the square root of the difference of the squares of the ordinate and...
Page 56 - Multiply the half sum and the three remainders continually together, and the square root of the product will be the area...
Page 14 - When a straight line standing on another straight line, makes the adjacent angles equal to one another, each of the angles is called a, right angle ; and the straight line which stands on the other is called a perpendicular to it. 11. An obtuse angle is that which is greater than a right angle. 12. An acute angle is that which is less than a right angle. 13. A term or boundary is the extremity of any thing.
Page 275 - ... known, by dividing the effect it ought to produce in a given time by the space intended to be described by the circumference of the wheel in the same time : the quotient will be the resistance overcome at the circumference of the wheel ; and is equal to the load required, the friction and resistance of the machinery included.
Page 255 - It is determined, we find, as a certain fraction of the length of a pendulum vibrating seconds in the latitude of London.
Page 155 - RULE.* To the square of the radius of the base add the square of the middle diameter between...
Page 215 - Weigh the denser body and the compound mass, separately, both in water, and out of it ; then find how much each loses in water, by subtracting its weight in water from its weight in air ; and subtract the less of these remainders from the greater. Then...

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