Simple Conical Projection
 Lines of Latitude •Equator •Latitudes Lines of Longitude •Prime Meridian •Longitudes Relationships Facts on Earth Zenithal Projections •Gnomonic Polar •Gnomonic Equatorial •Stereographic Polar •Stereographic Equatorial •Orthographic Polar •Orthographic Equatorial Simple Conic Projection Cylindrical Equal-area Projection References Figure A Figure B Figure C Figure D Figure E Figure F Figure G Figure H Figure I In this particular type of projection, the surface of the projected plane makes up a cone that circumscribes the globe with a selected parallel line tangential to the globe as seen in Figure A. Such a line is defined as the standard parallel with the characteristic that it is the arc of a circle with its centre at the vertex of the cone and with a true length. The true length of the standard parallel can be obtained as follows: (refering to Figure B) the cone LAT is seen to be tangential to the sphere at point L intersecting with the latitude LT with angular distance