Euclide's Elements: The Whole Fifteen Books, Compendiously Demonstrated : with Archimedes's Theorems of the Sphere and Cylinder, Investigated by the Method of Indivisibles. Also, Euclide's Data, and a Brief Treatise of Regular Solids
W. and J. Mount, and T. Page ... C. Hitch and L. Hawes ... R. Manby and S. Cox ... E. Comyns ... J. and J. Rivington ... and J. Ward, 1751 - 384 σελίδες
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ABCD added alfo given alſo altitude angle arch bafes baſe becauſe circle commenfurable common compounded Cone confequently Conftr contained Coroll cube defcribed demonftrated diameter divided double draw drawn equal equilateral faid fall fame fecond feeing fegment fhall fide figure fince folid fore fourth fquare fuperficies given in kind given in pofition given Magnitude given ratio greater hath Hence join likewife Logarithm magnitude manner mean meaſure medial multiplied parallel parallelogram pentagon perpendicular plane Plate prime produced PROP proportion ratio rectangle refidual remaining right-angles right-line ſhall ſphere Take taken thence third thofe triangle ABC whence Wherefore whole
Σελίδα 18 - If two triangles have one angle of the one equal to one angle of the other and the sides about these equal angles proportional, the triangles are similar.
Σελίδα 281 - ... which, when produced, the perpendicular falls, and the straight line intercepted, without the triangle, between the perpendicular and the obtuse angle. Let ABC be an obtuse-angled triangle, having the obtuse angle ACB, and from the point A let AD be drawn...
Σελίδα 2 - XV. A Circle is a plain figure contained under one line, which is called a circumference ; unto which all lines, drawn from one point within the figure, and falling upon the circumference thereof, are equal the one to the other. XVI. And that point is called the center of the circle. XVII. A Diameter of a circle is a right-line drawn thro' the center thereof, and ending at the circumference on either fide, dividing the circle into two equal parts.
Σελίδα 95 - An EVEN NUMBER is that which can be divided into two equal whole numbers.
Σελίδα 381 - Rule. Multiply the Logarithm of the given number by the Index of the proposed power, and the product will be the Logarithm, whose natural number is the power required.
Σελίδα 197 - ... than the other side, an obtuse-angled ; and if greater, an acute-angled cone. XIX. The axis of a cone is the fixed straight line about which the triangle revolves. XX. The base of a cone is the circle described by that side containing the right angle, which revolves. XXI. A cylinder is a solid figure described by the revolution of a rightangled parallelogram about one of its sides which remains fixed.
Σελίδα 196 - ... are •not in the fame Superficies: Or, a folid Angle is that which is contained under more than two plane Angles which are not in the fame Superficies, but being all at one Point. XII. A Pyramid is a folid Figure comprehended under divers Planes fet upon one Plane, and put together at one Point. ' «. XIII. A Prifm is a folid Figure contained under Planes, whereof the two oppofite are equal, fimilar, and parallel, and the others Parallelograms.
Σελίδα 353 - To divide one number by another.* Subtract the logarithm of the divisor from the logarithm of the dividend, and the remainder will be the logarithm of the quotient.
Σελίδα 2 - ... parts. XVIII. A Semicircle is a figure which is contained under the diameter and that part of the circumference which is cut off by the diameter. In the circle EABCD, E is the center, AC the diameter > ABC the femi circle.
Σελίδα 51 - ... touch the circumference of the circle. IV A right-lined figure is faid to be defcribed about a circle, when all the fides of the figure which is circumfcribed touch the periphery of the circle V.