Question

Q: angle POR and angle QOR are linear pair if x-y=80 find the value of x and y
1) x=130° and y=50°
2) x=50° and y=130°
3) x=100° and y=20°​

Answer 1

Answer:

given = x-y = 80 .... (1)

and x+y = 180 ... (2) [ linear pair ]

now add equation 1 and 2

x+y + x-y = 180 +80

2x = 260

x = 260/2

x= 130°

and y = 130 - y = 80

so, y = 130- 80

y = 50°