Normal (geometry) Normal (geometry) In geometry, a normal is an object such as a line or vector that is perpendicular to a given object. For example, in two dimensions, the normal line to a curve at a given point is the line perpendicular to the tangent line to the curve at the point. In three dimensions, a surface normal, or simply normal, to a surface at a point "P" is a vector that is perpendicular to the tangent plane to that surface at "P". The word "normal" is also used as an adjective: a line normal to a plane, the normal component
Ego Is Not a Dirty Word Ego Is Not a Dirty Word Ego Is Not a Dirty Word was the second studio album released by Australian pop rock band, Skyhooks, in July 1975. The album was the follow-up to their highly successful debut album, "Living in the 70's" (1974). As with the former album, it was also produced by Ross Wilson. The album spent 11 weeks at the number-one spot in the Australian Kent Music Report Albums Chart and sold 180,000 copies. Two singles were lifted from the album, "Ego Is Not a Dirty Word" and "All My Friends are Getting Married". The American release of