Grade 8
Mathematics
Unit: 09 Lesson: 01
Circle Graphs – Calculating Central Angles
Using data collected below on budgets, fill in the following tables and calculate the central angle for
each category. On the back of this page, construct the circle graph and answer the questions below.
History
Math
Science
Art
Language Arts
Band
Technology
$1,500
$2,500
$5,500
$8,200
$5,000
$9,350
$7,500
Category
Amount
Percent
Expression
TOTAL AMOUNT
Central Angle
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1. What is the sum of the central angle column? Why?
2. How much larger is the central angle of the largest amount than the least amount?
3. What is a good title for this circle graph?
4. How can you use color to emphasize certain categories?
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