RajeswariKnowledge Contributor									
															
						The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every
													The sum of the interior angles of a geometrical figure laid on the surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every												
												
												
		 
                    
surface of the earth differs from that of the corresponding plane figure only to the extent of one second for every. 100 sq. km of area. 150 sq. km of area. 200sq ft