Question

the angles of the quadrilateral are in ratio 5:4:3:6. find the measure of all angles

Answer 1

See.... this is very simple.
Let x be the number multiplied.
Angles of quadrilateral measures 360°
5x+ 4x+3x+ 6x=360°
18x=360°
x=20°
therefore the angles are 100°,80°,60°,120°

Answer 2

5:4:3:6= 
5x+4x+3x+6x=360
18x=360
x=360\18
x=20
5x=5*20
=100
4x=4*20
=80
3x=3*20
=60
6x=6*20
=120