Elements of geometry: consisting of the first four,and the sixth, books of Euclid, with the principal theorems in proportion [&c.] by J. Narrien1842 |
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Σελίδα
... equiangular figures inscribed in circles , and to what are called the five regular bodies . A fourteenth and a fifteenth book , both of which treat of the inscriptions of the five regular bodies in one another and in spheres , are ...
... equiangular figures inscribed in circles , and to what are called the five regular bodies . A fourteenth and a fifteenth book , both of which treat of the inscriptions of the five regular bodies in one another and in spheres , are ...
Σελίδα 11
... equiangular . PROP . VI . THEOR . IF two angles of a triangle be equal to one another the sides also which subtend , or are opposite to , the equal angles , shall be equal to one another . Let ABC be a triangle having the angle ABC ...
... equiangular . PROP . VI . THEOR . IF two angles of a triangle be equal to one another the sides also which subtend , or are opposite to , the equal angles , shall be equal to one another . Let ABC be a triangle having the angle ABC ...
Σελίδα 12
... equiangular triangle is also equilateral . PROP . VII . THEOR . UPON the same base , and on the same side of it , there cannot be two triangles having their sides which are terminated in one extremity of the base equal to one another ...
... equiangular triangle is also equilateral . PROP . VII . THEOR . UPON the same base , and on the same side of it , there cannot be two triangles having their sides which are terminated in one extremity of the base equal to one another ...
Σελίδα 88
... equiangular to a given triangle . Let ABC be the given circle , and DEF the given triangle : it is required to inscribe in the circle ABC a triangle equi- angular to the triangle DEF . Draw ( 17. 3. ) the straight line GAH touching the ...
... equiangular to a given triangle . Let ABC be the given circle , and DEF the given triangle : it is required to inscribe in the circle ABC a triangle equi- angular to the triangle DEF . Draw ( 17. 3. ) the straight line GAH touching the ...
Σελίδα 89
... equi- angular to a given triangle . Let ABC be the given circle , and DEF the given triangle : it is required to describe a triangle about the circle ABC equiangular to the triangle DEF . Produce EF both ways to the points , G , H , and ...
... equi- angular to a given triangle . Let ABC be the given circle , and DEF the given triangle : it is required to describe a triangle about the circle ABC equiangular to the triangle DEF . Produce EF both ways to the points , G , H , and ...
Άλλες εκδόσεις - Προβολή όλων
Elements of Geometry: Consisting of the First Four, and the Sixth, Books of ... Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2015 |
Elements of Geometry: Consisting of the First Four, and the Sixth, Books of ... Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Elements of Geometry: Consisting of the First Four,and the Sixth, Books of ... Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2013 |
Συχνά εμφανιζόμενοι όροι και φράσεις
ABCD AC is equal adjacent angles altitudes angle ABC angle ACB angle BAC assigned base BC bisected centre circle ABC circumference cone convex surface cylinder described diameter draw drawn duplicate ratio Edition equal angles equal or equivalent equi equilateral and equiangular Euclid exterior angle fore given line given rectilineal given straight line gnomon greater Greek homologous homologous sides inscribed join Latin Let ABC measure number of sides opposite angles parallel parallelepiped parallelogram perpendicular picket plane angles prism PROB proportional proposition pyramid Q. E. D. PROP rectangle contained rectilineal figure regular polygon remaining angle right angles segment similar solid angle sphere spherical angle square of AC straight line AC THEOR touches the circle triangle ABC triangle DEF wherefore
Δημοφιλή αποσπάσματα
Σελίδα 55 - In every triangle, the square of the side subtending either of the acute angles is less than the squares of the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the perpendicular let fall upon it from the opposite angle, and the acute angle.
Σελίδα 47 - CB ; wherefore the four figures HF, CK, AG, GE are equal to the squares of AC, CB, and to twice the rectangle AC, CB : but HF, CK, AG, GE make up the whole figure ADEB, which is the square of AB: therefore the square of AB is equal to the squares of AC, CB, and twice the rectangle AC, CB. Wherefore, if a straight line, &c.
Σελίδα 12 - UPON the same base, and on the same side of it, there cannot be two triangles that have their sides which are terminated in one extremity of the base equal to one another, and likewise those which are terminated in the other extremity...
Σελίδα 73 - CBED is greater than a semicircle, the angles CAD, CED are equal : therefore the whole angle BAD is, equal to the whole angle BED.
Σελίδα 8 - A New Treatise on the Use of the Globes ; or, a Philosophical View of the Earth and Heavens : comprehending an Account of the Figure, Magnitude, and Motion of the Earth: with the Natural Changes of its Surface, caused by Floods, Earthquakes, &c.
Σελίδα 142 - 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 11 - ABC is therefore equal to the remaining angle ACB, which are the angles at the base of the triangle ABC : And it has also been proved that the angle FBC is equal to the angle GCB, which are the angles upon the other side of the base. Therefore, " the angles at the base
Σελίδα 53 - AB be the given straight line ; it is required to divide it into two parts, so that the rectangle contained by the whole, and one of the parts, shall be equal to the square of the other part.
Σελίδα 30 - All the interior angles of any rectilineal figure, together with four right angles, are equal to twice as many right angles as the figure has sidef. For any rectilineal figure ABCDE can be divided into as many triangles as the figure has sides, by drawing straight lines from a point F within the figure to each of its angles.
Σελίδα 9 - If two triangles have two sides of the one equal to two sides of the...