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

Given

angle 4= 120

x + x+x+ 120= 360 (aNGLE SUM PRO.)

3X +120 = 360

3x= 360- 120

= 240

x= 240/3

= 80

Equal angles= 80 degrees

Hope this helps

Answer 2

Solution :

Let the measure of angles be 'y'

Now ,

We know that ,

Sum of all the angles of a quadrilateral = 360°

Given -

Three angles are equal measuring y and forth angle's measure is120°.

➨ y + y + y + 120° = 360°

➨ 3y = 360° - 120°

➨ 3y = 240°



➨ y = 240/3 = 80°



➨ y = 80°