 | Archer Green, William Henry Besant - 1881 - 142 pàgines
...QPR, qpr are equal. 1 If a parabola touch the sides of an equilateral triangle, the focal distance of any vertex of the triangle passes through the point of contact of the opposite side. 72. Let RW be the ordinate of R. Then AN' : A W'2:: PN * : RW*:: PN' : QM * :: AN:... | |
 | 1891 - 208 pàgines
...Taylor, DD)— Ií a triangle be circumscribed to a pair of confocal ellipses, prove that the confocal hyperbola through any vertex of the triangle passes...through the point of contact of its opposite side Ш APPENDIX I. Unsolved Questions ........................................ . ......................... | |
 | Sir Asutosh Mookerjee - 1893 - 197 pàgines
...one of them. Ex. 2. If a parabola touch the sides of an equilateral triangle, the focal distance of any vertex of the triangle passes through the point of contact of the opposite side. Ex. 3. Given the base AB and the vertical angle 0 of a triangle ACE, find the locus... | |
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If a parabola touch the sides of an equilateral triangle, the focal distance of any vertex of the triangle passes through the point of contact of the opposite side. 72. Let RW be the ordinate of R. Then AN... 