Question

find the measurement of the unknown angles
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Answer 1

Answer:

a =45°= c (vertical opposite angle are equal)

b= 135° ( linear pair)

Answer 2

Answer:

As L is parallel to m so,

angle c = 45° (corresponding angles)

now, angle a = angle c ( vertical opposite angles)= 45°

now angle a + angle b = 180 ( linear pair )

as, angle a = 45°

so 45+ angle b = 180°

angle b = 180- 45

angle b = 135°

hope it helps...