Question

are the lines a and b parallel ? also , find angle 1 angle angle 2 angle 3 angle 4​

Answer 1

Answer:

angle 1 =50

angle 2= 50

angle 3= 130

angle 4= 130

Answer 2

Answer:

Angle 1 = 50°.

Angle 2 = 50°

Angle 3 = 130°

Angle 4 = 130°

line a parallel b

Step-by-step explanation:

Here, Angle 2 = 180 - 130 [linear pair forms 180°]

= 50°

Angle CAD = Angle 2, thus forming a pair of corresponding angles.Therefore line a is parallel to the line b.

Angle 1 = Angle 2 = 50° ( vertically opposite angles)

Angle CAD = Angle 4 = 130° ( since a parallel b )

Angle 4 = Angle 3 = 130° ( vertically opposite angles)