The following frequency distribution shows the length (in feet) of the main spans of the longest suspension bridges in the United States. Construct a histogram, frequency polygon, and ogive for the distribution. Describe the shape of the distribution.

Class limits                     Frequency
1260–1734.....................................12
1735–2209.......................................6
2210–2684.......................................3
2685–3159.......................................1
3160–3634.......................................1
3635–4109.......................................1
4110–4584.......................................2