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.
Willowbrook, DuPage County, Illinois. This article is about village in DuPage County. For the unincorporated area, see Willowbrook, Will County, Illinois. For the school in Villa Park, Illinois, see Willowbrook High School. Willowbrook is a village in DuPage County, Illinois, United States. The population was 8,967 at the 2000 census.