Question

9. An angle of a quadrilateral is 120°. The other three angles are equal. Find the measure of each of the equal angle​

Answer 1

Step-by-step explanation:

sum of quadrilateral angles is = 360

120+3x=120

x=60

each angle is 60 degree

hope you understand

Answer 2

Answer:

The three angles are 60° , 120° , 60°

Step-by-step explanation:

As we know, a parallelogram has its opposite sides equal. So if A = 120° then the other angles are

B = 180°-120°=60° (adjacent angles are supplementary)

C = 120° (opposite angles are equal)

D = 60° (opposite angles are equal)