4.1    INTRODUCTION:

A quadrilateral has  4 sides, 4 angles and 2 diagonals.

We can construct a quadrilateral if we know any four measurements.

With the help of the following measurements we can construct quadrilaterals.

i) Four sides and a diagonals.

ii) Three sides and two diagonals.

iii) Four sides and an angle.

iv) Three sides and two included angles.

v) Two adjacent sides and three angles.