10-2 Circle Graphs

1
10-2 Circle Graphs

• D1 Read and interpret graphs

2
Circle Graphs

• Show parts to a whole
• All circle graphs represent 100
• Good for showing survey results

100
50
33.3
33.3
25
25
33.3
3
Steps to create a circle graph

• Find the percent that each part represents
• (if not given)
• Convert the percentage to degrees of the circle
  Example 18 of 360 0.18 360 65
• Draw a radius from the center to the side of
  circle
• Measure the given degree by lining up protractor
  with that radius
• Repeat with remaining sectors
• Label the sections with the percents category
  and give the graph a title

4
Example US (1896-2000) Olympic Medals
Type Number
Gold 872
Silver 658
Bronze 587
Angles ()



2,117
100
360
Add two Columns to table and label and
angle Use steps to create the circle graph How
many total medals have been won?
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US (1896-2000) Olympic Medals
Angles ()