Question

In figure, line l is parallel to line m..
Find the value of b.​

Answer 1

Answer:

b=a(corresponding angles)

2a=80°

b=a=40°

hope it helps you and don't forget to follow mè

Answer 2

Given :   line l is parallel to line m

To Find :  value of a and b.​

Solution:

Properties of angles formed by transversal line  with two parallel lines :

• Corresponding angles are congruent.  

• Alternate angles are congruent.  ( Interiors & Exterior  both )  

• Interior angles are supplementary. ( adds up to 180°)

2a  = 80°    ( alternate angles)

=> a = 40°

b = a    ( alternate angles)

=> b = 40°

Value of a & b are 40°

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