 The perpendicular bisectors of the sides of a triangle meet in a point. 12. The bisectors of the angles of a triangle meet in a point. 13. The tangents to a circle from an external point are equal. 14...  Plane and Solid Geometry - Σελίδα 65των Isaac Newton Failor - 1906 - 418 σελίδεςΠλήρης προβολή - Σχετικά με αυτό το βιβλίο
 | Bombay (India : State). Board of Education - 1851 - 768 σελίδες
...hisector of the angle between the two lines, what is the form of the equation ? 1 1 . Hence prove that the bisectors of the angles of a triangle meet in a point. 12. Find the equation of a straight line, in terms of the perpendiculars on it, from the origin and... | |
 | Thomas Penington Kirkman - 1852 - 236 σελίδες
...see that it is the bisector of the angle CBA ; for [22] DBe and DBg have equal sines. Thus the three bisectors of the angles of a triangle meet in a point, which is the centre of the inscribed circle. By Prop. B. (20), AC x Df+ BC*De + ABxDg= twice the area of the... | |
 | John Daniel Runkle - 1860 - 460 σελίδες
...bisectors of the angles of this triangle, and since their sum vanishes identically, we have the proof that the bisectors of the angles of a triangle meet in a point. Again, if S = 0 and 6" = 0 are the equations of two conies, then S -|- k S' = 0 is that of the conic... | |
 | 1860 - 462 σελίδες
...bisectors of the angles of this triangle, and since their sum vanishes identically, we have the proof that the bisectors of the angles of a triangle meet in a point. Again, if S = 0 and S" = 0 are the equations of two conies, then S _|_ t g' = о is that of the conic... | |
 | Bombay (India : State). Board of Education - 1851 - 764 σελίδες
...bisector of the angle between the two lines, what is the form of the equation ? 11. Hence prove that the bisectors of the angles of a triangle meet in a point. 12. Find the equation of a straight line, in terms of the perpendiculars on it, from the origin and... | |
 | Euclides - 1874 - 120 σελίδες
...Conditions of Equality. Props. 4, 8, 26, 5 and 6. 1. The perpendiculars from the middle points of two sides of a triangle meet in a point which is equidistant from the three angles of the triangle. 2. Find a point within an acute-angled triangle from which a circle may... | |
 | Richard Wormell - 1876 - 268 σελίδες
...given side. 58. A ladder is gradually raised against a wall : find the path of its middle point. 59. The bisectors of the angles of a triangle meet in a point. 60. The perpendiculars to the sides of a triangle at their middle points meet in a point. 61. The perpendiculars... | |
 | Charles Mansford - 1879 - 112 σελίδες
...Conditions of Equality. Props. 4, 8, 26, 5 arid 6. 1. The perpendiculars from the middle points of two sides of a triangle meet in a point which is equidistant from the three angles of the triangle. 2. Find a point within an acute-angled triangle from which a circle may... | |
 | Samuel Constable - 1882 - 222 σελίδες
...the angles OBD, OCD, respectively. The triangle BAC, thus formed, is the required one. Join OA. Since the bisectors of the angles of a triangle meet in a point (22), and the angles B, C, are bisected by construction, 0 is the centre of the inscribed circle. Hence... | |
 | Richard Wormell - 1883 - 210 σελίδες
...And, since OD is constant, ... О B is constant : Therefore the path is the quadrant of a circle. 59. The bisectors of the angles of a triangle meet .in a point. For the intersection of any two of them determines a point which is equally distant from the -three... | |
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