1 Equilateral triangle: An equilateral triangle is one in which all three sides have the same length. 2  Isoceles triangle: An isoceles triangle is one in which two sides have the same length.  Scalene triangle: A scalene triangle is one in which all three sides have different lengths.
Western Springs, Illinois. Western Springs is a village located in Cook County, Illinois, United States and is a suburb of Chicago. As of the 2010 census, the village had a total population of 12,975. It is twinned with Rugeley, United Kingdom.
For the unincorporated community in Adams County, see Spring Valley, Adams County, Illinois. Spring Valley is a city situated on the Illinois River in Bureau County, Illinois. The population was 5,398 at the 2000 census, and 5,558 at the 2010 census. It is part of the Ottawa â Streator Micropolitan Statistical Area.