Construct a quadrilateral ABCD given `AB=3.5cm , BC=6.5cm , angleA=75^@ , angleB=105^@ , angleC=120^@`

Explanation

1. Draw a line segment of ab = 3.5 cm
2. Measure angle 75@ from point 'a' by using protractor.
3. According to property of Quadrilateral
/_a + 2b + 2c + /_ = 360@
60@ + 4b + 120@ +75@= 360@/_b = 105@4. Measure angle 105@ AT point b and draw a line.
5. measure length = 6.5 cm with the help of compass and cut the arc at the line from point 'b'. you will get point 'c'
6. at point 'c' measure 120° and draw a line, which cuts the line drawn from point 'a'.
7. measure the angle 'd', you will find that it measures 75°.Hence,the quadrilaterals.