Answers

2014-04-10T11:53:52+05:30
Let the adacent angle be x
so the angle we are talking about will be x-20
as we know that in allgm there is 2 pair of opposite angles which are equal
so we get that
x+x+x-20+x-20=360(angle sum property)
x+x+x+x-20-20=360
4x-40=360
4x=360-40
4x=320
x=80
x-20=60
SO we get both the x = 80 & x -20 =60  
1 5 1
  • Brainly User
2014-04-10T21:49:26+05:30
Let one angle be x
then other angle = x-20
we know that sum of adjacent angles  in a parallelogram =180
=>x+x-20 = 180
=>2x=200
=>x=100
opposite angles are equal in a parallelogram 
so angles are 100, 80,100,80 
0