Spherical geometry other geometric concepts are defined as in plane geometry, but with straight lines replaced by great circles. Thus, in spherical geometry, angles are defined between great circles, resulting in a spherical trigonometry that differs from ordinary trigonometry in many respects; for example, the sum of the interior angles of a triangle exceeds 180 degrees. Spherical geometry is "not" elliptic geometry, but is rather a "subset" of elliptic geometry. For example, it shares with that geometry the property that a line has no parallels through a given point. Contrast this with Euclidean geometry, in which a line has one parallel through
Basic symptoms of schizophrenia symptoms and brief transient psychosis, to detect at-risk mental states in help-seeking people. COPER criteria are met when at least 1 of the symptoms on the scale (see table below) is present with at least weekly occurrence in the last 3 months, and the first occurrence of symptoms was more than 12 months prior to evaluation. Below are the basic symptoms associated with psychosis, along with whether they appear on COGDIS, COPER, or both: The Examination of Anomalous Self-Experience (EASE) is another scale used to evaluate subjective symptoms of schizophrenia. This is a semi-structured interview scheme that was designed to