Elements of geometry, containing books i. to vi.and portions of books xi. and xii. of Euclid, with exercises and notes, by J.H. SmithRivingtons, 1872 - 349 σελίδες |
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Αποτελέσματα 1 - 5 από τα 26.
Σελίδα 142
... TANGENT to , or to touch , a circle , when it meets and , being produced , does not cut the circle . From this definition it follows that the tangent meets the circle in one point only , for if it met the circle in two points it would ...
... TANGENT to , or to touch , a circle , when it meets and , being produced , does not cut the circle . From this definition it follows that the tangent meets the circle in one point only , for if it met the circle in two points it would ...
Σελίδα 143
... tangent to the circle . D P B Let ABC be a O , of which the centre is O , and the diameter AOB . Through B draw DE at right angles to AOB . I. 11 . Then must DE be a tangent to the . Take any point P in DE , and join OP . Then , ... OBP ...
... tangent to the circle . D P B Let ABC be a O , of which the centre is O , and the diameter AOB . Through B draw DE at right angles to AOB . I. 11 . Then must DE be a tangent to the . Take any point P in DE , and join OP . Then , ... OBP ...
Σελίδα 144
... tangent to the C BCD . I. 16 . Similarly it may be shewn that AD is a tangent to ✪ BCD . Next , let the given pt . be on the Oce of the O , as B. Then , if BA be drawn to the radius OB , 1 BA is a tangent to the © at B. I. 16 ...
... tangent to the C BCD . I. 16 . Similarly it may be shewn that AD is a tangent to ✪ BCD . Next , let the given pt . be on the Oce of the O , as B. Then , if BA be drawn to the radius OB , 1 BA is a tangent to the © at B. I. 16 ...
Σελίδα 162
... tangents is double of the angle contained by the line joining the points of contact , and the diameter drawn through one of them . Ex . 4. The vertical angle of any oblique - angled triangle inscribed in a circle is greater or less than ...
... tangents is double of the angle contained by the line joining the points of contact , and the diameter drawn through one of them . Ex . 4. The vertical angle of any oblique - angled triangle inscribed in a circle is greater or less than ...
Σελίδα 164
... tangent to the ✪ ABH . III . 16 . III . 32 . And the chord AB is drawn from the pt . of contact A , .. △ BAD = 4 ... tangents at P and Q is equal to the angle between the tangents at A. Ex . 2. From two given points on the same side of ...
... tangent to the ✪ ABH . III . 16 . III . 32 . And the chord AB is drawn from the pt . of contact A , .. △ BAD = 4 ... tangents at P and Q is equal to the angle between the tangents at A. Ex . 2. From two given points on the same side of ...
Άλλες εκδόσεις - Προβολή όλων
Elements of Geometry, Containing Books I. to Vi.And Portions of Books Xi ... James Hamblin Smith,Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2022 |
Elements of Geometry, Containing Books I. to VI.and Portions of Books XI ... James Hamblin Smith,Euclides Δεν υπάρχει διαθέσιμη προεπισκόπηση - 2018 |
Συχνά εμφανιζόμενοι όροι και φράσεις
AB=DE ABCD AC=DF angle contained angles equal angular points base BC bisecting the angle centre chord circumference coincide describe diagonals diameter divided equal angles equiangular equilateral triangle equimultiples Eucl Euclid exterior angle given angle given circle given line given point given st given straight line greater Hence inscribed intersect isosceles triangle LEDF less Let ABC Let the st lines be drawn magnitudes middle points multiple opposite angles opposite sides parallelogram pentagon perpendicular polygon produced Prop prove Q. E. D. Ex Q. E. D. PROPOSITION quadrilateral radius rectangle contained Reflex Angles rhombus right angles segment shew shewn straight line joining subtended sum of sqq Take any pt tangent THEOREM touch trapezium triangle ABC triangles are equal twice rect vertex vertical angle
Δημοφιλή αποσπάσματα
Σελίδα 52 - If a side of any triangle be produced, the exterior angle is equal to the two interior and opposite angles; and the three interior angles of every triangle are together equal to two right angles.
Σελίδα 17 - If two triangles have two angles of the one equal to two angles of the other, each to each ; and one side equal to one side, viz.
Σελίδα 167 - 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.
Σελίδα 69 - The complements of the parallelograms which are about the diameter of any parallelogram, are equal to one another. Let ABCD be a parallelogram, of which the diameter is AC...
Σελίδα 106 - To draw a straight line through a given point parallel to a given straight line. Let A be the given point, and BC the given straight line ; it is required to draw a straight line through the point A, parallel to the straight hue BC.
Σελίδα 88 - If a straight line be bisected, and produced to any point, the square on the whole line thus produced, and the square on the part of it produced, are together double of the square on half the line bisected; and of the square on the line made up of the half and the part produced. Let the straight line AB be bisected in C, and produced to the point D. Then the squares on AD, DB, shall be double of the squares on AC, CD.
Σελίδα 78 - If there be two straight lines, one of which is divided into any number of parts, the rectangle contained by the two straight lines is equal to the rectangles contained by the undivided line, and the several parts of the divided line.
Σελίδα 91 - In every triangle, the square on the side subtending either of the acute angles, is less than the squares on the sides containing that angle, by twice the rectangle contained by either of these sides, and the straight line intercepted between the acute angle and the perpendicular let fall upon it from the opposite angle, Let ABC be any triangle, and the angle at B one of its acute angles, and upon BC, one of the sides containing it, let fall the perpendicular AD from the opposite angle.
Σελίδα 5 - A circle is a plane figure contained by one line, which is called the circumference, and is such that all straight lines drawn from a certain point within the figure to the circumference, are equal to one another.
Σελίδα 5 - A diameter of a circle is a straight line drawn through the centre, and terminated both ways by the circumference.