Question

IN A QUADRILATERAL, THE SUM OF THREE ANGLES IS EQUAL TO THE TWICE THE FOURTH ANGLE. FIND THE MEASURE OF THE FOURTH ANGLE​

Answer 1

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...(i)

Also we know that

X+y+z+w=360°

2w+w=360°

3w=360°

w=120°

Fourth angle of a quadrilateral is 120°