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17.1 Using bearings

2 The diagram shows the positions of a shop and a school. N
a Write down the bearing of the shop from the school.
b Write down the bearing of the school from the shop.

Shop

N

3 Ahmad goes for a walk. N
The diagram shows the initial position N
of Ahmad (A), a farm (F), a pond (P), School
a tree (T) and a waterfall (W).
Write down the bearing that Ahmad
follows to walk from: F
a A to F b F to P W N
c P to T d T to W
e W to A. N

N
A

P

T
4 a For each diagram, write down the bearing of Y from X and X from Y.
i N ii N iii N

Y X Y
N

N
N
X

Y
X
b Draw two different diagrams of your own, plotting two points X and Y.
In each diagram, the bearing of Y from X must be less than 180°.
For each of your diagrams write down the bearing of Y from X and of X from Y.
c What do you notice about each pair of answers you have given in parts a and b?
d Copy and complete this rule for two points X and Y, when the bearing of Y from X is less than 180°.
When the bearing of Y from X is m°, the bearing of X from Y is °.
160 17 Bearings and scale drawing