Question

The measure of the three angles of quadrilateral are 65°, 75°and 85°. The measure of the fourth angle is

Answer 1

Answer:

Step-by-step explanation:

SUM OF ALL ANGLES OF A QUDRILATERAL IS ALWAYS 360 DEGREE.

a+b+c+d=360

d=360-(65+75+85)

d= 360-225

d=135

Answer 2

Answer:

Sum of the angles in a quadrilateral

is 360°....

Let the 4th angle be 'x'

So, 65°+75°+85°+X = 360

225+X= 360

x = 360-225

X = 135