Answer:
a ⇒ North
b ⇒ Northwest
c ⇒ Northeast
d ⇒ Southeast
Step-by-step explanation:
∵ The angle between Northwest and a is 45° mid way between vertical (North) and horizontal (west)
∴ The direction of a is North
∵ b is midway between North and West
∴ The direction of b is Northwest
∵ Northwest ⊥ to c
∴ The direction of c is Northeast
∵ Northwest and d make straight angle
∴ The direction of d is Southeast
