polygon-b

gistfile1.txt

{
   "type":"FeatureCollection",
   "features":[
      {
         "type":"Feature",
         "geometry":{
            "type":"Polygon",
            "coordinates":[
               [
                  [
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                  ],
                  [
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                     40.7218757540408
                  ],
                  [
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                     40.7178761818995
                  ],
                  [
                     -104.964987012523,
                     40.7195462558448
                  ],
                  [
                     -104.97124602974,
                     40.7235458279862
                  ]
               ]
            ]
         },
         "properties":{
            "calc_area":138114.87008833035,
            "name_0":"first"
         }
      }
   ]
}