Question

9. ABCD is a parallelogram in which one angle is 120 Find the other threeangles​

Answer 1

adjacent angles of a parallelogram sum to 180º

either adjacent angle to the 120º angle is 60º

opposite angles of a parallelogram are congruent

the other angles are 60º, 120º, and 60º (along with the 120º angle that was given)

Answer 2

Answer:

given:in a parallelogram ABCD

Explanation:

if we think |A is 120

the other three angles are equal to

|B is 90,|C is 90,|D is 90

how means,

the sum of the angles in a parallelogram is 360degree right,

so, the other three each angles are equal to 90degree.

|ABC+|BCD=360

120+|BCD=360

|BCD=360-120

=240