Fill in the Blanks UNIT 1: LOCATING PLACES ON MAPSOnline version It is easy! Believe me! You can locate places on maps using the geographical coordinates, for this reason, we are going to learn these important concepts... by Bilingual San Fernando 1 LONGITUDE MERIDIAN COORDINATE HEMISPHERE horizontal east GREENWICH west latitude vertical pole perpendicular south southern LATITUDE PARALLEL north GEOGRAPHICAL terrestrial longitude western eastern MERIDIAN northern EQUATOR is an imaginary line , a semicircle which goes from one to the other . is the point of reference ( 0º ) for other meridians . is the distance in degrees or of the prime meridian at 0º measured by the angle between the plane of the prime meridian through the point in question , or by the corresponding time difference . is an imaginary line , a circle which is to the meridian . is the most important parallel and is the point of reference for the other parallels . is an angular distance in degrees or of the equator ( latitude 0º ) , equal to the angle subtended at the centre of the globe by the meridian between the equator and the point in question . is half of the globe , divided into and hemispheres by the equator or into and hemispheres by some meridians , usually 0º and 180º . is the combination of and which gives us the position of a place on maps .