Question

three angles of a quadrilateral are equal and the fourth angle measures 360 degree what is the measure of each of the equal angle​

Answer 1

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

Let the measure of each of the equal angles be x.

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

X + X + X + 120°= 360°.

3X + 120° = 360°.

3X = 360° - 120°

3X = 240°.

X = 80° Ans.