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Contour lines do not ever cross one another because each line represents a different elevation on a topographic map. However, contour lines may merge in the case of a vertical cliff. More »

www.reference.com Math Geometry Shapes

Examples of art line designs include geometric optical art, black and white straight line patterns and rhythmic line designs. Line art designs are mainly composed of lines in varying weights, orientation and perspectives... More »

www.reference.com Art & Literature Fine Art Drawing

A depression contour line is a marking on a map indicating a low point of land completely surrounded by more elevated land. The area is represented by closed concentric lines. The inner depression contour lines indicate ... More »

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Contour lines on a map indicate elevation or depth. Numeric notations on contour lines refer to the level of elevation, or height above sea level. More »

www.reference.com Geography Maps & Cartography

A contour in geography refers to a line on a contour or topographical map that designates a specific and constant elevation above sea level. Contour lines are used to express a three-dimensional image of terrain on a two... More »

www.reference.com Geography Maps & Cartography

The term "contour interval" refers to the vertical distance between contiguous contour lines in terms of elevation. Commonly illustrated on a topographic map, the elevations between contour lines are uniformly spaced alo... More »

www.reference.com Geography Maps & Cartography

A six-sided shape is called a hexagon as long as all six sides are straight lines and the lines connect to make one closed shape. If it does not close or has curved lines, there is no generic name for the shape. More »

www.reference.com Math Geometry Shapes