1. Lesson 7.5
Concept: How to make and use circle graphs
Guidelines: There are 360o in a whole circle. The angle of a part of a circle can be found by solving a proportion.
A circle graph represents data as parts of a circle.
To find the measure of a circle graph, change percents to an angle by multiplying by 360o
25%
0.25 • 360 =
90o

2. Practice:
85% 5%
38%

3. Solve using a proportion:
250 students were asked to name their favorite candy bar. The results were……..
26% Snickers, 34% Hershey, 12% Butterfinger, 28% M&M’s
How many students chose each type in the poll?
26% Butterfinger x 26
Solve using cross products =
250
100
Finish solving for all the data.

4. Use the data from the previous slide to make a circle graph.