Draw a circle. The arc length of each section is proportional to the quantity it represents, usually resulting in a shape similar to a slice of pie. Finally, use the angles you calculate to draw a pie chart, using a protractor to measure each angle. The formula to determine the angle of a sector in a circle graph is: Study the following steps of constructing a circle graph or pie chart: Method 1 of 3: Making a Pie Chart on the Computer ... Divide each section of the pie chart. Make sure to label all the segments with the names of the beverages and write percentages or angles in degrees inside the slices. A pie chart (also called a Pie Graph or Circle Graph) makes use of sectors in a circle. The angle of a sector is proportional to the frequency of the data. The example used here is about different makes of car. Another Example. You can make a pie chart on your computer using an online program or you can draw the pie chart by hand using basic math skills. Your pie chart is ready. Step 3 – Draw the Pie Chart Using the Angles: Once you have all the angles, you can then draw a pie chart. It takes seconds, and you don’t have to remember how to use a protractor or worry about getting your angles wrong. Use the protractor to measure the degrees of each sector. This MS PowerPoint demonstrates how to create Pie Charts using a protractor and paper. Now you are ready to start drawing! That’s it! The main thing is to enter your data properly. A pie chart is a good chart to choose when displaying data that has stark contrasts. Next, multiply each percentage by 360 to find the angle between that data point and the next lowest data point. A pie chart is a circular chart that shows how data sets relate to one another. Entering your pie-chart data To enter […] When you're finished, you can color in each segment of the chart to help differentiate them. Worked Example # 2 – Transportation: Constructing Circle Graphs Or Pie Charts. Drawing a pie chart on the computer is a fantastic experience, at least compared with doing it by hand. Then use your protractor to measure the degrees of each sector. Finish up by coloring each sector and giving it a label like "Comedy: 4 (20%)", etc. This can be used not only to demonstrate to your class, but can also be looped and left on display as a class reminder and helps to reduce the number of questions the class are likely to ask you! (And dont forget a title!) Steps.