Euclide's Elements: The Whole Fifteen Books Compendiously Demonstrated. With Archimedes Theorems of the Sphere and Cylinder, Investigated by the Method of Indivisibles |
From inside the book
Results 1-5 of 73
Page 61
... reason is any o- ther point of the lineACplaced without the circle . 2. Draw BE perpendicular to AL . The fide BA ... given A to draw a right line AC which fhall touch a circle given DBC . From D the center of the circle given lǝt a line ...
... reason is any o- ther point of the lineACplaced without the circle . 2. Draw BE perpendicular to AL . The fide BA ... given A to draw a right line AC which fhall touch a circle given DBC . From D the center of the circle given lǝt a line ...
Page 158
... reason fhall AB be prime to D. b Therefore AB is prime to CD . Which was to ... given at first , A , B , multiply- ing the faid produced numbers ( Aq , Bq ) ... given in the beginning AB , BC fhall be prime to one another . 1. Hyp . For if ...
... reason fhall AB be prime to D. b Therefore AB is prime to CD . Which was to ... given at first , A , B , multiply- ing the faid produced numbers ( Aq , Bq ) ... given in the beginning AB , BC fhall be prime to one another . 1. Hyp . For if ...
Page 291
... given from the points I K , which pre made by the perpendiculars in the ... reason the angles HKF , HKD , HKE are right angles . Therefore ALqc LMqAMqcc ... given , each to each ; perpendiculars drawn from the extreme points of thofe ...
... given from the points I K , which pre made by the perpendiculars in the ... reason the angles HKF , HKD , HKE are right angles . Therefore ALqc LMqAMqcc ... given , each to each ; perpendiculars drawn from the extreme points of thofe ...
Page 351
... given points , is faid to be ordered , by reason it cannot be other- wife done , nor in divers manners . But an an gle paffing by two points is faid to be Inordina tum ( or difordinate and irregular ) for that it is made in infinite and ...
... given points , is faid to be ordered , by reason it cannot be other- wife done , nor in divers manners . But an an gle paffing by two points is faid to be Inordina tum ( or difordinate and irregular ) for that it is made in infinite and ...
Page 361
... GIVEN . Now this Book is divided according to the Species or Kinds of the things GIVEN , and in the first Section are contained those things which are given by Reason . Secondly , fuch as are given by Pofition and laftly , fuch as are given ...
... GIVEN . Now this Book is divided according to the Species or Kinds of the things GIVEN , and in the first Section are contained those things which are given by Reason . Secondly , fuch as are given by Pofition and laftly , fuch as are given ...
Other editions - View all
Common terms and phrases
ABC is given ABCD abfurd alfo given alſo altitude angle ABC angle BAC bafe baſe becauſe bifect circle commenfurable compounded Cone confequently conftr Coroll cube defcribed Demonftr diameter Dodecaedron drawn equilateral faid fame fecond feeing fegment fhall fide figure firft fome Forafmuch fore fphere fquare number fubtended fuch fuperficies fuppofed given by kind given by magnitude given by pofition given magnitude given reafon greater hath Icofaedron infcribed interfection leaft lefs likewife meaſure medial oppofite parallel parallelepipedon parallelogram pentagone perpendicular plane prifms PROP proportion pyramides rectangle refidual line right angles right line AB right line BC right line given Schol Scholium ſhall thefe thofe thoſe triangle ABC whence Wherefore whofe whole
Popular passages
Page 26 - 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.
Page 406 - ... 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...
Page 269 - A fphere is a folid figure defcribed by the revolution of a i'emicircle about its diameter, which remains unmoved. XV. The axis of a fphere is the fixed ftraight line about which the femicircle revolves. XVI. The centre of a fphere is the fame with that of the femicircle. XVII. The diameter of a fphere is any ftraight line which pafles through the centre, and is terminated both ways by the fuperficies of the fphere.
Page 2 - The radius of a circle is a right line drawn from the centre to the circumference.
Page 1 - Bounds) of a Line, are Points. IV. A Right Line, is that which lietb evenly between its Points.
Page 269 - ... be less 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 right angled parallelogram about one of its sides which remains fixed.
Page 26 - ... the fum of the remaining angles of the one triangle equal to the fum of the remaining angles of the other. 3 . If one angle in a triangle be right, the other two are equal to a right-angle.
Page 76 - ... the angular points of the figure about which it is defcribed, each thro' each. III. A rectilineal figure is faid to be infcribed in a circle, when all the angles of the infcribed figure are upon the circumference of the circle.
Page 77 - ... 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.
Page 269 - Right Lines that touch one another, and 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.