When you have a triangle and think of one of the sides as the base, then there is one corner of the triangle that is not on the base and this point is the furthest point on the triangle from the base. The height of the triangle is the line that is perpendicular to the base and goes through that furthest point.
Welcome Back, Kotter is an American sitcom starring Gabe Kaplan as a wisecracking high school teacher in charge of a racially and ethnically diverse remedial class called the Sweathogs. The show also features a young John Travolta and was largely responsible for making him a star.
She was 66 and had breast cancer, according to her sister, Julie Strassman. On Welcome Back, Kotter, which aired on ABC from 1975 to 1979, she played wife Julie to the title character played by Gabe Kaplan, a teacher who returns to his old high school in Brooklyn.