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.
Spring Valley is a city situated on the Illinois River in Bureau County, Illinois. The population was 5,398 at the 2000 census. It is part of the OttawaâStreator Micropolitan Statistical Area. Spring Valley is located at 41Â°19â²38â³N 89Â°12â²3â³W / 41.32722Â°N 89.20083Â°W / 41.32722; -89.20083 (41.327154, -89.200752).