This figure shows 2 pie charts each divided into 3 sectors of red, blue and green. On both charts the red sector at bottom right is labelled ‘Soccer’, the blue sector at top right is labelled ‘Rugby’ and the green sector at left is labelled ‘Cricket’. The left-hand pie chart is labelled ‘3D pie chart’ and has the appearance of a coin lying on a table where you can distinguish the top of the coin and the front edge. The right-hand pie chart is labelled ‘2D pie chart’ and has the appearance of a coin standing on edge on a table where only the front face can be distinguished. In the 3D chart the sectors for Rugby and soccer seem very similar in size and cricket appears smaller. In the 2D chart all the sectors appear very similarly sized.