Theory:

Quadrilateral:
A quadrilateral is a closed figure of exactly \(4\) sides.
Before getting to constructing quadrilaterals, it is essential to know the properties of each of the quadrilaterals.
Properties of a parallelogram
Figure 1.png
 
1. A parallelogram has equal and parallel opposite sides.
 
2. The diagonals of a parallelogram always bisect each other.
Properties of a rhombus
6 (4).png
 
1. All sides of a rhombus are equal.
 
2. The opposite sides of a rhombus are always equal and parallel.
 
3. All angles in a rhombus are always at \(90\) degrees.
 
4. The diagonals always bisect each other and cut each other at right angles.
Properties of a rectangle
1235_8_1.png
 
1. In a rectangle, the opposite sides are equal and parallel.
 
2. All angles in a rectangle are always equal and are always of \(90\) degrees.
 
3. The opposite angles are always supplementary; that is, they sum up to \(180\) degrees.
Properties of a square
4 (1).png
 
1. All sides in a square are equal.
 
2. All angles in a square are equal and are of \(90\) degrees.
 
3. The opposite sides in a square are always equal and are always parallel to each other.
 
4. The opposite angles are always supplementary; that is, they sum up to \(180\) degrees.
 
5. The diagonals bisect each other and always cut each other at right angles.