Question

in the given figure l //m find the value of a and b ​

Answer 1

Answer:

by exterior angle property angle abc= 48

a+65+48=180

a=67

now,

angle sal = angle acb (transverse angle property)

then,

a+b+angle sal = 180

67+65+angle b =180

angle b =180-132

b= 48

Answer 2

Answer

By using exterior Angle property of Triangle

Exterior Angle property = Sum of two opposite interior angles of triangle is equal to exterior Angle.

65 + 67 = 132

a = 67 (Opposite angles are equal)

65 + 67 + Angle LBC = 180 (Angle sum property of Triangle)

132 +LBC = 180

angle LBC = 180 - 132

Angle LBC = 48

Angle LBC = CBL ( Alternate Interior Angles)

Angle B = 48