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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 contour line drawing, or simply contour drawing, is an outline of the main features in a drawing. Some main features may be sketched out, but the purpose of a contour drawing is to determine the mass and size that the ... More »

www.reference.com Art & Literature Fine Art Drawing
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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

Circles have an infinite number of lines of symmetry. Any line that bisects a circle through its center is a line of symmetry. Circles are the only Euclidean shape with this property. More »

www.reference.com Math Geometry Shapes