Base Angles of Isosceles Triangle are the equal angles between the base and the legs of the Isosceles Triangle. And is denoted by ∠Base. Base Angles of Isosceles Triangle is usually measured using the Degree for Angle. Note that the value of Base Angles of Isosceles Triangle is always positive. Typically, the value of Base Angles of Isosceles Triangle lies in the range from 0 to 180.