en.wikipedia.org/wiki/Circle_graph

In graph theory, a circle graph is the intersection graph of a set of chords of a
circle. That is, it is an undirected graph whose vertices can be associated with ...

nces.ed.gov/nceskids/graphing/classic/pie.asp

Pie Chart. There are all kinds of charts and graphs, some are easy to understand
while others can be pretty tricky. There are so many different types because ...

www.mathplanet.com/education/pre-algebra/introducing-geometry/circle-graphs

A part of a circle is called an arc and an arc is named according to its angle. A
circle graph, or a pie chart, is used to visualize information and data. A circle
graph ...

www.shodor.org/interactivate/activities/CircleGraph/

Enter your data below, one per line: 7, school 2, eat 2, play outside 3, watch tv 8,
sleep 1, chores 1, homework. © Shodor ...

www.mathsisfun.com/data/pie-charts.html

You can show the data by this Pie Chart: Pie Chart Example. It is a really good
way to show relative sizes: it is easy to see which movie types are most liked, and
...

www.mathplayground.com/piechart.html

Represent data with a circle graph or pie chart at MathPlayground.com!

www.khanacademy.org/math/pre-algebra/pre-algebra-math-reasoning/pre-algebra-picture-bar-graphs/v/reading-pie-graphs-circle-graphs

Reading pie graphs (circle graphs). AboutTranscript. Reading Pie Graphs (Circle
Graphs). Created by Sal Khan and Monterey Institute for Technology and ...

www.khanacademy.org/math/algebra2/intro-to-conics-alg2/standard-equation-circle-alg2/e/graphing_circles

Given the standard form equation of a circle, graph the circle. For example, graph
the circle who's equation is (x+5)²+(y+2)²=4.

www.webquest.hawaii.edu/kahihi/mathdictionary/C/circlegraph.php

Circle Graph: a graph that is made by dividing a circle into sections or categories.
It allows for comparison of the part to the whole. Hawaiian Translation: Pakuhi ...

www.meta-chart.com/pie

Create a customized Pie Chart for free. Enter any data, customize the chart's
colors, fonts and other details, then download it or easily share it with a shortened
...