Iron Triangle, Richmond, California Iron Triangle of the Vietnam war era.) Residents are attempting to reverse this image in a number of ways. One of these is the new East Bay Center for the Performing Arts (completed in 2011) at MacDonald and 11th St, which contains the aptly-named Iron Triangle Theater. Iron Triangle, Richmond, California The Iron Triangle, sometimes known as Central Richmond, is a neighborhood in Richmond, California. It is a largely residential area but includes the downtown Richmond business district along Macdonald Avenue. Commercial areas on Cutting Boulevard and near Interstate 580 are also in the neighborhood if the more extensive of
Altitude (triangle) the tangential triangle, and the center of similitude of the orthic and tangential triangles, are on the Euler line. Trilinear coordinates for the vertices of the tangential triangle are given by For more information on the orthic triangle, see here. For any triangle with sides and semiperimeter , the altitude from side is given by This follows from combining Heron's formula for the area of a triangle in terms of the sides with the area formula (1/2)×base×height, where the base is taken as side and the height is the altitude from . Consider an arbitrary triangle with sides and with