(1) Trigonometrical stations; A trigonometrical station is a fixed surveying station that shows the exact heigh of a physical feature. In a map it is represented by a triangle followed by a number of the exact height from the sea level, many station are locatecdib the peaks of hikks for the eaaebof being spotted from many directions.
(2) Spot height; this is methods which used dots, the relief is indicated by a dot with a number of the exact height of a place in a map.
(3) Form lines;Form lines are not measured from any datum plane and have Jo standard elevation, they give only a general idea of the relief. They are represented on a map as dashed lubes and are never labelled with representative elevation.
(4) Shaded relief; thus indicates relief by a shadow effect achieved by tone and colour that result in the darkening of one side of terrain features such as hills and ridge. The steeper the slope the darker the shedding, it is some time used in combinations with contour lines to emphasize these feature.
(5) Contours lines; this is the most common method of showing relief and elevation in a standard topographical map. A contour line represents an imaginary lines in the ground above or bellwo sea level. Contour lunes are drwan on a map to join all places of the same elevation above or belliw sea level qich is regarded as zero height
(6) Layer tinting or colouring; Thus is the method of showing relief by different colours. Also is used for each band of elevation which represent a definite elevation range. How ever a Map user cannot determine the exact elevation of a special point by using this method.