What is a Circle Graph in Mathematics?
In school curricula and statistical standards, a circle graph is another term for a pie chart. It visually represents data as sectors of a circle where the size of each sector corresponds directly to the fraction or percentage of the whole dataset.
Because a full rotation around a circle's center point equals 360°, each 1% of data corresponds exactly to 3.6° of central angle (360° / 100 = 3.6°). This fundamental geometric property allows students and researchers to draft precise sector graphs using either a traditional protractor or our browser-based circle graph maker.