 | William Emerson - 1769 - 370 sider
...furface of the fphere is equal to that made by their reprefentatives upon the plane of projection. Let the angle BPK be projected. Thro' the angular...projection EFG. Let a plane PHG touch the fphere in P ; then fince the circle EPD is perpendicular both to this plane and to the plane of projection ,... | |
 | William Emerson - 1793 - 386 sider
...made by their reprefentatives upon the plane of projection. Let the angle BPK be projected. Through the angular point P and the center C, draw the plane...projection EFG. Let a plane PHG touch the fphere in P; then'fince the circle EPD is perpendicular both to this plane and to the plane of projection, therefore... | |
 | Thomas Simpson - 1810 - 168 sider
...of projection. Let the angle BPK (fig. 44.) be projected. Through the angular point P and the centre C, draw the plane of a great circle PED, perpendicular...plane of projection EFG ; let a plane PHG touch the sphere in P ; then since the circle EPD is perpendicular both to this plane and to the plane of projection,... | |
 | Thomas Simpson - 1810 - 152 sider
...BPK (fig. 44.) be projected. Through the angular point P and the centre C, draw the plane of a gieat circle PED, perpendicular to the plane of projection EFG ; let a plane PHG touch the sphere in P ; then since the circle EPD is perpendicular both to this plane and to the plane of projection,... | |
 | James Mitchell - 1823 - 666 sider
...projection. Let the angle B PK, (fig. 3.) be projected; through the angular point P and the centre C draw the plane of a great circle PED, perpendicular...plane of projection EFG. Let a plane PHG touch the sphere in P ; then, since the circle EPD is perpendicular both to this plane and to the plane of projection,... | |
 | Peter Nicholson - 1825 - 1046 sider
...be projected ¡ through the angular point P and the centre С draw the plane of a great circle FED, perpendicular to the plane of projection EFG. Let a plane PHG touch the sphere in P ; then, since the circle EFD is perpendicular both to this plane and to the plane of projection,... | |
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C, draw the plane of a great circle PED, perpendicular to the plane of projection EFG ; let a plane PHG touch the sphere in P ; then since the circle EPD is perpendicular both to this plane and to the plane of projection, it is perpendicular to their... 