Maps - WJECBearings

Maps and scale drawings form a crucial part of everyday life. Scale drawings are useful in a variety of careers from surveyors, to town planning and architecture. We also need to understand bearings.

Part ofMaths Numeracy (WJEC)Geometry and Measure

Bearings

Bearings are an effective way to describe a direction. There are some rules to using bearings that you need to be aware of to use them effectively:

  • bearings are always measured clockwise from north
  • bearings always have three numbers, and those numbers describe the angle from north
A protractor with line A marking 0 degrees and Line B marking 135 degrees

To find the bearing of B from A:

  • place your protractor over the north line with 0° at the top
  • give the answer as a three-figure bearing

The bearing of B from A is 135°.

Examples

To describe this direction:

A line marked as N with a line showing direction of travel as 125 degrees from N

We would use a bearing of 125°. This is obtained by placing the protractor so the 0 line is on north and measuring the angle from north to the direction of travel.

3 angles bearing 60 degrees, 240 degrees and 330 degrees

These three directions can be described with the bearings below them. Pay particular attention to the first diagram – notice that the angle is 60° but the bearing is 060°.

Bearings are always three figures, and are always measured clockwise from north.

Question

What is the bearing of A from B?

Two lines at angle B, one marked N and one marked A