Key learning points

1. A pie chart is another way of presenting data representing parts of a whole.
2. Pie charts can be constructed using knowledge of angles and fractions.
3. A protractor is used to accurately measure each angle.

Keywords

• Pie chart - A pie chart is a circular graph where sectors represent different groups in proportion to each other.

• Sector - A sector is a part, or ‘pie-slice’ part, of a pie chart.

Common misconception