The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh and Twelfth ; the Errors, by which Theon, Or Others, Have Long Ago Vitiated These Books, are Corrected, and Some of Euclid's Demonstrations are Restored ; Also the Book of Euclid's Data, in Like Manner CorrectedDesilver, 1829 - 516 sider |
Inni boken
Resultat 6-10 av 98
Side 65
... the per- pendiculars drawn to them from the cen- tre are equal . V. And the straight line on which the greater perpendicular falls , is said to be farther from the centre . VI . A segment of a circle is the figure I THE ...
... the per- pendiculars drawn to them from the cen- tre are equal . V. And the straight line on which the greater perpendicular falls , is said to be farther from the centre . VI . A segment of a circle is the figure I THE ...
Side 80
... perpendicular to FA , and let it meet the circumference in H : and because AGD is a right an- gle , and EAG less ( 19. 1. ) than a right angle : DA is greater ( 19. 1. ) than DG : but DA is equal to DH ; therefore DH is greater than DG ...
... perpendicular to FA , and let it meet the circumference in H : and because AGD is a right an- gle , and EAG less ( 19. 1. ) than a right angle : DA is greater ( 19. 1. ) than DG : but DA is equal to DH ; therefore DH is greater than DG ...
Side 81
... perpendicular to DE ; and because FGC is a right angle , GCF is ( 17. 1. ) an acute angle ; and to the greater angle the greatest ( 19. 1. ) side is L opposite ; therefore FC is greater than FG ; but BOOK III . 81 THE ELEMENTS OF EUCLID .
... perpendicular to DE ; and because FGC is a right angle , GCF is ( 17. 1. ) an acute angle ; and to the greater angle the greatest ( 19. 1. ) side is L opposite ; therefore FC is greater than FG ; but BOOK III . 81 THE ELEMENTS OF EUCLID .
Side 82
... perpendicular to DE : in the same manner it may be shown , that no other is perpendicular to it be- sides FC , that is , FC is perpendicular to DE . Therefore , if a straight line , & c . , Q. E. D. A F B Ꭰ C G E PROP . XIX . THEOR ...
... perpendicular to DE : in the same manner it may be shown , that no other is perpendicular to it be- sides FC , that is , FC is perpendicular to DE . Therefore , if a straight line , & c . , Q. E. D. A F B Ꭰ C G E PROP . XIX . THEOR ...
Side 95
... angles then , as before , if BD be bisected in F , F is the centre of the circle . Join AF , and from F draw ( 12. 1. ) FG See Note . D perpendicular to AC ; therefore AG is equal ( BOOK III . 95 THE ELEMENTS OF EUCLID .
... angles then , as before , if BD be bisected in F , F is the centre of the circle . Join AF , and from F draw ( 12. 1. ) FG See Note . D perpendicular to AC ; therefore AG is equal ( BOOK III . 95 THE ELEMENTS OF EUCLID .
Andre utgaver - Vis alle
The Elements of Euclid: Viz, the First Six Books, Together with the Eleventh ... Robert Simson,Euclid Euclid Ingen forhåndsvisning tilgjengelig - 2018 |
Vanlige uttrykk og setninger
altitude angle ABC angle BAC base BC BC is equal BC is given bisected centre circle ABCD circumference co-sine cone cylinder demonstrated described diameter draw drawn equal angles equiangular equimultiples Euclid ex æquali excess fore given angle given in magnitude given in position given in species given magnitude given ratio given straight line gnomon greater join less Let ABC multiple parallel parallelogram parallelogram AC perpendicular point F polygon prism proportionals proposition Q. E. D. PROP radius ratio of AE rectangle CB rectangle contained rectilineal figure remaining angle right angles segment sides BA similar sine solid angle solid parallelopipeds square of AC straight line AB straight line BC tangent THEOR third triangle ABC triplicate ratio vertex wherefore
Populære avsnitt
Side 9 - Let it be granted that a straight line may be drawn from any one point to any other point.
Side 81 - The angles in the same segment of a circle are equal to one another.
Side 315 - Equiangular parallelograms have to one another the ratio which is compounded of the ratios of their sides.
Side 33 - 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 sides.
Side 49 - If a straight line be divided into any two parts, the rectangle contained by the whole and one of the parts, is equal to the rectangle contained by the two parts, together with the square of the aforesaid part.
Side 96 - If from any point without a circle two straight lines be drawn, one of which cuts the circle, and the other touches it ; the rectangle contained by the whole line which cuts the circle, and the part of it without the circle, shall be equal to the square of the line which touches it.
Side 155 - 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.
Side 22 - ANY two angles of a triangle are together less than two right angles.
Side 25 - Let A, B, C be the three given straight lines, of which any two whatever are greater than the third, viz.
Side 24 - Any two sides of a triangle are together greater than the third side.