GCSE Secondary Maths Age 13-17 - Geometry & Measures: Bearings - Explained

The video tutorial explains how to solve a bearing problem involving two runners, Martin and Janet. Martin runs from checkpoint A to B on a bearing of 065 degrees, and Janet runs the reverse route. The tutorial demonstrates how to calculate the bearing of A from B using angles and parallel lines, emphasizing the importance of clear diagrams and understanding that bearings are measured clockwise from the North line. The solution involves calculating angles and understanding the properties of parallel lines and angles around a point.

What is the initial bearing on which Martin runs from checkpoint A to checkpoint B?

• 055 degrees

• 065 degrees

• 085 degrees

• 075 degrees

Why is it important to draw a North line when solving bearing questions?

• To calculate the speed of travel

• To determine the starting point

• To measure the angle from the North direction

• To measure the distance between points

What is the bearing of A from B after calculating the necessary angles?

• 115 degrees

• 245 degrees

• 065 degrees

• 180 degrees

Which mathematical property is used to find the angle of 115 degrees in the bearing calculation?

• Alternate angles are equal

• Exterior angles of a polygon sum to 360 degrees

• Interior angles of parallel lines sum to 180 degrees

• Angles in a triangle sum to 180 degrees

What is a key point to remember about bearings in this context?

• Bearings are always given as two-figure numbers

• Bearings are measured counterclockwise from the North line

• Bearings are measured from the South line

• Bearings are measured clockwise from the North line