Lac Triangulaire is a Lake located in Belle-Rivière; Lac-Saint-Jean-Est, Quebec and has an elevation of 397 meters.

• Latitude: 48° 0' 12'' North   (decimal: 48.0033333)
• Longitude: 72° 2' 37'' West   (decimal: -72.0436111)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 397 meters
• Location: Belle-Rivière; Lac-Saint-Jean-Est
• Atlas of Canada Locator Map: Lac Triangulaire
• GPS Coordinate Locator Map: Lac Triangulaire Lat/Long