Cut a pie into thirds. Then cut each third in half. How many pieces do you have?
A third is one of three equal parts of something. 1/3
Half of a number, an amount, or an object is one of two equal parts that together make up the whole number, amount, or object. 一半
A pie chart
A pie chart is a circular statistical graphic, which is divided into slices to illustrate numerical proportion. In a pie chart, the arc length of each slice, is proportional to the quantity it represents. While it is named for its resemblance to a pie which has been sliced, there are variations on the way it can be presented.