Question

In the given figure, if lines l and m are parallel, then x =

विकल्प

• 20°

• 45°

• 65°

• 85°

Answer 1

The given figure is as follows:

Since, l || m. Thus, 65° angle and ∠1 are corresponding angles.

Therefore,

∠1= 65° (i)

In a triangle, we know that, the exterior angle is equal to the sum of the interior opposite angle.

In ΔAOB:

∠1 = x +20°

 x = ∠1 - 20°

From equation (i):

x = 65° - 20°

 x = 45°