Question

three angles of a quadrilateral is respected at equal to 30 40 and 50 degree find the fourth angle thanks

Answer 1

We know that the sum of the angles in a quadrilateral is 360 degrees

Lets take the fourth angle as x

so we have

30°+40°+50°+x°= 360°

120+x° = 360°

x°=360-120 = 240°

Hence the fourth angle = 240°