Two lines intersect. One pair of vertically opposite angles is each (2y + 10) deg, and the other pair is each (3y - 30) deg. Use the fact that adjacent angles form a linear pair to find y.

Question

Accepted Answer

40. An angle from each pair are adjacent (linear pair): (2y + 10) + (3y - 30) = 180, 5y - 20 = 180, 5y = 200, y = 40.

Two lines intersect. One pair of vertically opposite angles is each $(2 y + 10)$ deg, and the other pair is each $(3 y - 30)$ deg.
Use the fact that adjacent angles form a linear pair to find $y$ .

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Linear Pair and Vertically Opposite Angles practice

Two lines intersect. One pair of vertically opposite angles is each (2y+10) deg, and the other pair is each (3y−30) deg.Use the fact that adjacent angles form a linear pair to find y.

Step-by-Step Solution

Master this chapter in 30 minutes a day.

More Class 9 Linear Pair and Vertically Opposite Angles practice

Two lines intersect. One pair of vertically opposite angles is each $(2 y + 10)$ deg, and the other pair is each $(3 y - 30)$ deg.
Use the fact that adjacent angles form a linear pair to find $y$ .