Question

In the figure, ∠POR and ∠QOR form a linear pair. If a – b = 70^o the values of a and b are

• A. a = 135^o. b = 45^o
• B. a = 125^o, b = 55^o
• C. a = 130^o, b = 50^o
• D. a = 105^o, b = 75^o

Answer 1

The correct option is B

a = 125^o, b = 55^o

a + b = 180^o (linear pair),

a – b = 70^o

Solving the equations for a and b

2a = 250^o ⇒ a = 125^o,

b = 180^o – 125^o =55^o