Question

In a quadrilateral the sum of three angles is equal to thrice the 4th angle the measure of 4th angle is

Answer 1

Answer:

Fourth angle of a quadrilatral is 120

Step-by-step explanation:

Let x,y,z,w are the angles of the given quadrilateral.

According to the given question

X+y+z = 2w..... ()

Also we know that

X+y+z+w=360*

2w+W=360

3w=360°

w=120°