Question

One of the angles of a parallelogram is 120 degree then find the remaining angles​

Answer 1

Answer:

Your answer is given below

Step-by-step explanation:

=>2A+2B=360. =>B=180-A=180-120=60

Answer 2

Answer:

the measure of angles is A=C=120 and B=D=60

Step-by-step explanation:

Construct a parallelogram ABCD.

Let known angle be A=120.

It is well known that opposite angles are equal in a parallelogram.

Now,

A=C=120

B=D=?

Angle sum property of a quadrilateral,

A+B+C+D=360

=>2A+2B=360.

=>2(A+B)=360

=>A+B=180

=>B=180-A-180-120-60.

Hence, the measure of angles is A=C=120 and B=D=60