Question

12. The opposite angles of a parallelogram are (2x + 10)° and (3x)°. Find the measures of all angles of the parallelogram.

Answer 1

opposite angles in a parralelogram are equal so equate them.
the answer
x=10
put the value of x
2x+10=30°
3x=30°
adjacent angles sum is 180° so 180-30=150°
the other angle value is 150°
The angles are 30°,150°,30°,150° .