Question

three angles of a quadrilateral are equal and the measure of the fourth angle is 120 degree find the measure of each of the equal angles​

Answer 1

Answer:

Step-by-step explanation:

The sum of all angles of Quadrilateral is 360 degrees.

If three angles of quadrilateral are equal, consider each angle to be x.

Then, 3x+120 = 360

3x=240

x=80 degrees.

Therefore, the measure of each of the three equal angles of the quadrilateral is 80 degrees.