Equilateral triangle a triangle with any two sides "a" and "b", and an angle "C" between them is Each angle of an equilateral triangle is 60°, so The sine of 60° is formula_50. Thus since all sides of an equilateral triangle are equal. Equilateral triangles have frequently appeared in man made constructions: Equilateral triangle In geometry, an equilateral triangle is a triangle in which all three sides are equal. In the familiar Euclidean geometry, an equilateral triangle is also equiangular; that is, all three internal angles are also congruent to each other and are each 60°. It is also a regular polygon,
International (The Three Degrees album) International (The Three Degrees album) International is a 1975 studio album released by the female girl group The Three Degrees. The album includes the 1974 hit single, "TSOP (The Sound of Philadelphia)". In the United Kingdom, the album was released under the title "Take Good Care of Yourself", where it charted at #6, in Europe the album was issued with the alternative title of "With Love". The album was also issued in Japan with an alternative running order and several different tracks. The album was re-issued in October 2010, for the first time in its entirety on CD by Big