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**Hint:**In this question, first we will draw the rough sketch of a quadrilateral. Then we will define the term quadrilateral and its properties. After this, we will define the adjacent and opposite angles in quadrilateral.

**Complete step-by-step answer:**

Let’s draw a rough sketch of a quadrilateral.

So, this is the diagram of a general quadrilateral.

Now, we will define quadrilateral:

A polygon bounded by four sides is called a quadrilateral.

Properties of quadrilateral are as follow:

1. It has four sides.

2. It has four vertices.

3. The sum of all internal angles is 360 degree.

The different types of quadrilateral are:

1. Square:- All sides are equal and opposites sides are parallel. Each angle is 90 degrees.

2. Rectangle- opposite sides are equal and parallel. Each angle is 90 degrees.

3. Rhombus- All sides are equal and opposites sides are parallel.

4. Trapezium- -One pair of opposite sides is parallel and the other pair is not parallel.

Now, let’s see the definition of adjacent and opposite angles.

1. Adjacent angles- The angles formed on the sides of the quadrilateral are called adjacent angles.

\[\angle KLM\] and \[\angle LMN\]are adjacent angles.

2. Opposite angles- The angles formed on the opposite vertices of the quadrilateral are called opposite angles.

So, \[\angle KLM\]and \[\angle MNK\], \[\angle MKL\]and \[\angle LMN\] are the two pairs of opposite angles of a given quadrilateral.

**Note:**In such a type of question, you should have knowledge of basic things like definition of different types of polygon, adjacent angles, vertices, opposite angles etc. The formula for calculating the sum of internal angles of a polygon is (n – 2)$ \times {180^0}$, where ‘n’ is the total number of sides.

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