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  2. Isosceles trapezoid - Wikipedia

    en.wikipedia.org/wiki/Isosceles_trapezoid

    Any non-self-crossing quadrilateral with exactly one axis of symmetry must be either an isosceles trapezoid or a kite. [5] However, if crossings are allowed, the set of symmetric quadrilaterals must be expanded to include also the crossed isosceles trapezoids, crossed quadrilaterals in which the crossed sides are of equal length and the other sides are parallel, and the antiparallelograms ...

  3. Trapezoid - Wikipedia

    en.wikipedia.org/wiki/Trapezoid

    Others [3] define a trapezoid as a quadrilateral with at least one pair of parallel sides (the inclusive definition [7]), making the parallelogram a special type of trapezoid. The latter definition is consistent with its uses in higher mathematics such as calculus. This article uses the inclusive definition and considers parallelograms as ...

  4. Biology of depression - Wikipedia

    en.wikipedia.org/wiki/Biology_of_depression

    The biology of depression is the attempt to identify a biochemical origin of depression, as opposed to theories that emphasize psychological or situational causes. [ 1 ] Scientific studies have found that different brain areas show altered activity in humans with major depressive disorder (MDD) . [ 2 ]

  5. Trapezium - Wikipedia

    en.wikipedia.org/wiki/Trapezium

    Trapezium, plural trapezia, may refer to: Trapezium, in British and other forms of English, a trapezoid, a quadrilateral that has exactly one pair of parallel sides; Trapezium, in North American English, an irregular quadrilateral with no sides parallel; Trapezium (bone), a bone in the hand; Trapezium Cluster, a group of stars in the Orion Nebula

  6. Major depressive disorder - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_disorder

    This article needs to be updated. The reason given is: Many outdated sources and information (older than five years). Please help update this article to reflect recent events or newly available information. (July 2024) Medical condition Major depressive disorder Other names Clinical depression, major depression, unipolar depression, unipolar disorder, recurrent depression Sorrowing Old Man (At ...

  7. Trapezius - Wikipedia

    en.wikipedia.org/wiki/Trapezius

    The trapezius muscle resembles a trapezium, also known as a trapezoid, or diamond-shaped quadrilateral. The word "spinotrapezius" refers to the human trapezius, although it is not commonly used in modern texts. In other mammals, it refers to a portion of the analogous muscle.

  8. Profile of mood states - Wikipedia

    en.wikipedia.org/wiki/Profile_of_mood_states

    The second edition of the profile of mood states scale is known as the POMS short form. POMS measures six different dimensions of mood swings over a period of time. These include: Tension or Anxiety, Anger or Hostility, Vigor or Activity, Fatigue or Inertia, Depression or Dejection, Confusion or Bewilderment.

  9. Major depressive episode - Wikipedia

    en.wikipedia.org/wiki/Major_depressive_episode

    Although the exact origin of depression is unclear, it is believed to involve biological, psychological, and social aspects. [2] Socioeconomic status, life experience, genetics, and personality traits are believed to be factors in the development of depression and may represent an increased risk of developing a major depressive episode. [3]