A Textbook on Surveying and Mapping ...: Answers to questions

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International Textbook Company, 1898 - Surveying
 

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Page 16 - Operations with Fractions A) To change a mixed number to an improper fraction, simply multiply the whole number by the denominator of the fraction and add the numerator.
Page 19 - When mixed numbers and whole numbers are to be added, add the fractional parts of the mixed numbers separately, and if the resulting fraction is an improper fraction, reduce it to a whole or mixed number. Next, add all the whole numbers, including the one obtained from the addition of the fractional parts, and annex to their sum the fraction of the mixed number obtained from reducing the improper fraction.
Page 4 - Multiply each term of the multiplicand by each term of the multiplier...
Page 18 - If necessary, reduce the fractions to a common denominator, add the numerators, and write the sum over the common denominator.
Page 59 - In this case where both dividend and divisor are compound, reduce each to the lowest denomination mentioned in either and then divide as in simple numbers. 1 bu. 1 pk. 7 qt. 356 bu. 3 pk. 5 qt.
Page 79 - ... into the tri-rectangular triangle. From one of the vertices A, let diagonals AC, AD, be drawn to all the other vertices ; the polygon ABCDE will be divided into as many triangles, minus two, as it has sides. But the surface of each triangle is measured by the sum of all its angles minus two right angles...
Page 83 - Gk. i(dyavov, from t£, hex, six, + yavla, flonia, angle). A geometric figure of six sides. When the sides and angles are respectively equal, the hexagon is said to be regular. If a regular hexagon is inscribed in a circle, each side is equal to the radius of the circle, and by joining the angular points to the centre of the circle six equilateral triangles are formed. Hence the perimeter of the circle may be divided into six equal parts by laying off in succession six chorda, each equal to the radius.

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