Information AboutDecagonal |
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In Geometry , a decagon is any Polygon with ten sides and ten Angle s, and usually refers to a Regular decagon, having all sides of equal length and all angles equal to 144°, therefore making each angle of a regular decagon be 144°. Its Schläfli Symbol is {10}. The area of a regular decagon of side length ''a'' is given by : CONSTRUCTION A regular decagon is Constructible with a Compass And Straightedge . #Complete steps 1 though 6 of Constructing A Pentagon . #Extend a line from each corner of the pentagon through the center of the Circle made in step 1 of Constructing A Pentagon to the opposite side of that same circle. #The five corners of the pentagon constitute every other corner of the decagon. The remaining five corners of the decagon are those points where the lines of step 2 cross the original circle (but not a pentagon corner). SEE ALSO EXTERNAL LINKS
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