Question

Please help on Question (d) and (a) only.
Show workings and answer well.

Answer 1

answer A)

a + 80° - 120 ( LINEAR PAIR )

A - 40°

B = 80° ( Vartical opposite angle )

ANSWER d)

a + 100 = 180 ( linear pair )

a = 80°

a = c ( internal opposite angle )

so , c= 80°

c + b + 55° = 180°. ( Linear Pair )

80 + 55 + b = 180

135 + b = 180°

b = 45°

( ✅ verified answer )