## A system of geometry and trigonometry: with a treatise on surveying; in which the principles of rectangular surveying, without plotting, are explained |

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Acres Roods Rods centre chains and links ciphers circle co-sine Co'ine compass Cotang Cotine course and distance decimal departure column diagonal diameter difference Dist diurnal motion divided division Doub double area double the area Draw the line east or west equal EXAMPLE feet FIELD BOOK figures find the angles find the area George Gillet given number given side Gulliver's land half hypothenuse inches land Lat Dep latitude and departure learner leg A B length line A B logarithmic sine measure meridian distances multiplied N.Tan natural sines north areas number of acres OPPOSITE ANGLE parallelogram perpendicular PROBLEM PROTRACT protractor quotient radius rhombus right angled triangle rod chains Rule scale secant side A B side B C side required south area square root station stationary lines substract survey surveyor taken Tang trapezium trapezoid TRIGONOMETRY