Question

5. Three angles of a quadrilateral are equal and its fourth angle is a right angle. Find the
measure of each.

Answer 1

Answer:

It is given that three angles are equal and measure of fourth angle is 120o.

Let the measure of each of the equal angles be x

We know that, sum of four measure of angles of quadrilateral is 360o.

⇒  x+x+x+120o=360o

⇒  3x+120o=360o

⇒  3x=240o

⇒  x=80o

Hence, this is the answer.