Picture of trapezium

Trapezium A trapezium is a quadrilateral wherein one pair of the opposite sides are parallel while the other isn’t. This 4 sided closed flat shape is also referred to as a trapezoid. In other words, a trapezium is basically a triangle with the top sliced off. The parallel sides of a trapezium are called the base. Figure ABCD is a trapezium. Here AB||CD but yes AD and BC are not parallel. To calculate the height we need to draw a perpendicular from one parallel side to another. The area of a trapezium can be calculated by taking the average of the two bases and multiplying it by its altitude. The formula for it is given below. Area of a Trapezium = h \( \frac \) × 19 × 20 A = 190 cm² Q. Are all the sides of a rhombus equal? Ans. Yes, all sides of a rhombus are equal. Q. Why rhombus is not a regular polygon? Ans. Rhombus is not a regular polygon because all the angles are not the same. For a polygon to be regular, all the edges and all the angles required to be equal. In fact, among quadrilaterals, only the squares are regular but not a rhombus. Q. Which rhombus comprises the right angles? Ans. Indeed, a rhombus can comprise right angles. In fact, a rhombus in which all sides are equal and all angles measure 90 degrees is called a square.

Each area has a different use. The upper trapezius arises from your occipital bone in the back of your skull and the nuchal line in the back of your neck. The muscle also has attachments to the spinous processes of cervical level one through six via the ligamentum nuchae. Attachments of the lower fibers of the trapezius arise from the spinous processes of cervical seven through thoracic level 12. The upper trapezius, the part that goes across the tops of your shoulders, can elevate or bring up your shoulder girdle. It also helps extend, tilt, and rotate your neck, which has the effect of bringing your head back, to the side, and turning it. The rotation function takes the head into the opposite side to which this neck and shoulder muscle is located. The middle trapezius helps bring the shoulder blades back, toward the spine. Again, if you sit at a desk or drive all day, this may prove a handy move for preventing or managing excessive kyphotic posture in that area. The middle trapezius also helps stabilize the shoulder during certain arm movements. • How well can I move my shoulders up, and especially, down? • Do I have pain or uncomfortable sensations at the top of either shoulder or both? If your shoulder movement is limited and/or there's a pain in the area, one or both of your upper trapezius muscles may be in spasm. Fortunately, solutions exist that for the most part are non-medical and easy to implement.

Synonyms: Greater multangular bone, Os multangulum majus The trapezium bone is one of the eight saddle) shaped joint which provides the human hand with the wide mobility common described as having “opposable thumbs”. The main feature of this carpal bone is a tubercle located on the bone’s anterior (palmar) aspect, termed the tubercle of trapezium bone. Adjacent to this tubercle is the groove of trapezium bone. The palmar surface of the trapezium bone provides attachment for the flexor retinaculum and proximal attachment for the three Terminology English: Trapezium bone Latin: Os trapezium Definition, function and features The trapezium is a carpal bone located at the base of the thumb (radial aspect, distal row). It articulates with the first metacarpal as a sellar (saddle) shaped joint. The trapezium features a tubercle and groove on its palmar surface, providing attachment for the flexor retinaculum and thenar muscles of hand. All content published on Kenhub is reviewed by medical and anatomy experts. The information we provide is grounded on academic literature and peer-reviewed research. Kenhub does not provide medical advice. You can learn more about our content creation and review standards by reading our Moore, K. L., Dalley, A. F., & Agur, A. (2017). Clinically oriented anatomy (8th ed.). Lippincott Williams and Wilkins. Standring, S. (2016). Gray's Anatomy (41tst ed.). Edinburgh: Elsevier Churchill Livingstone. © Unless stated otherwise, all content, including ill...

• Afrikaans • العربية • Asturianu • Azərbaycanca • বাংলা • Banjar • Bân-lâm-gú • Беларуская • Беларуская (тарашкевіца) • Български • Bosanski • Brezhoneg • Català • Čeština • Corsu • Cymraeg • Dansk • Deutsch • Eesti • Ελληνικά • Español • Esperanto • Euskara • فارسی • Français • Gaeilge • Galego • 한국어 • Հայերեն • हिन्दी • Hrvatski • Bahasa Indonesia • IsiZulu • Íslenska • Italiano • עברית • ქართული • Қазақша • Kiswahili • Latviešu • Lëtzebuergesch • Lietuvių • Magyar • Македонски • മലയാളം • مازِرونی • Bahasa Melayu • မြန်မာဘာသာ • Nederlands • 日本語 • Нохчийн • Norsk bokmål • Norsk nynorsk • Occitan • Oʻzbekcha / ўзбекча • پنجابی • Polski • Português • Română • Русский • Simple English • Slovenčina • Slovenščina • Српски / srpski • Srpskohrvatski / српскохрватски • Suomi • Svenska • தமிழ் • Татарча / tatarça • ไทย • Türkçe • Українська • Tiếng Việt • Winaray • 吴语 • 粵語 • Zazaki • 中文 The entire Orion Nebula in a composite image of visible light and infrared; taken by Observation data: Subtype 05 h 35 m 17.3 s −05°23′28″ Distance 1,344±20 4.0 Apparent dimensions (V) 65×60 Physical characteristics 12 — Notable features Designations LBN 974, See also: The Orion Nebula (also known as Messier 42, M42, or NGC 1976) is a Great Nebula in Orion or the Great Orion Nebula. The Orion Nebula is one of the most scrutinized and photographed objects in the night sky and is among the most intensely studied celestial features. Physical characteristics [ ] The Orion Nebula is visible with the na...