Logo of the BBC Also, under-logo lines were added to the logo for the first time. These lines were coloured blue, red, green to reflect the flags of Scotland, Wales, and Northern Ireland respectively (an "English-bias" has always been a criticism of the BBC), as well as the three phosphors of colour television. These appeared on the BBC national-region identities from the identities' debut in 1988 and its gradual television debut over the period 1989–1991. Previously, in 1986, the electronically generated BBC2 logo was updated. The number 2 was replaced with the word TWO. The letters were white, 3D letters on a white background
Reuleaux triangle triangle with the Fina name from 1950 until Petrofina's merger with Total S.A. in 2000. Another corporate logo framed in the Reuleaux triangle, the south-pointing compass of Bavaria Brewery, was part of a makeover by design company Total Identity that won the SAN 2010 Advertiser of the Year award. The Reuleaux triangle is also used in the logo of Colorado School of Mines. In the United States, the National Trails System and United States Bicycle Route System both mark routes with Reuleaux triangles on signage. According to Plateau's laws, the circular arcs in two-dimensional soap bubble clusters meet at 120°