# What is trapezoid?

## What Does trapezoid Mean

A Greek word came to our language as a trapezoid , a term used in geometry and anatomy . As a geometric concept, a trapezoid is an irregular type quadrilateral that lacks parallel sides .

Trapezoids are polygons : plane figures that are made up of a finite number of consecutive, straight segments. Polygons that have four sides are called quadrilaterals . The characteristics of quadrilaterals also indicate that they have two diagonals and four vertices and that, when adding their interior angles, the result is 360º .
Within the set of quadrilaterals , on the other hand, irregular quadrilaterals are called figures whose sides are not equal.

Having said all this, we can detail that the trapezoid is a polygon (flat figure) that qualifies as an irregular quadrilateral (it has four sides that are not equal).
In addition to all the above, we have to underline the existence of several types of trapezoids, among which the following stand out:

-Asymmetric trapezoids. It is also known by the name of scalene trapezoid and is characterized by all its sides being different.

-Symmetric trapezoid or bisosceles trapezoid. It is identified because it is symmetric with respect to the major diagonal, because it has two pairs of equal consecutive sides, and because it has a pair of opposite angles that are also equal. That without forgetting that its diagonals are perpendicular.
Moving on to the realm of anatomy , the trapezoid is a short bone found in the wrist . This cancellous bone has a total of six faces (including two articular faces). The trapezoid articulates with the large bone, the trapezius bone, the second metacarpal, and the scaphoid bone.
It can be said that the trapezoid is in the second row of the carpus, being the second bone in this area. It should be noted that the set of bones that make up the skeleton of the wrist is known as the carpus .
Due to its location, the trapezoid is one of the carpal bones . Carpal injuries, in this sense, are traumas or fractures that affect the trapezoid and the rest of the carpal bones.
Among the most common pathologies that can affect the aforementioned trapezoid bone is the so-called trapeziometacarpal arthrosis, which is a degenerative disease that entails not only the disappearance of what is the cartilage that covers the joints but also their space. This without forgetting that a remarkable hardening of what is the set of bone areas takes place.
A notable stiffness in the joint, a clear functional disability and loss of strength are three of the common signs experienced by the person who suffers from this type of osteoarthritis that affects the trapezoid. An ailment that will require the patient to undergo different tests that can certify its existence in order to start the treatment that is considered most appropriate.

Specifically, it will bet on physiotherapy and even on the intake of a specific medication and, in cases where it is required, surgery will be used.

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