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Pie Chart with Fractions

flavor
apple
cherry
blueberry
fraction of pie eaten
0.33
Variants of this silly little cartoon showing a pie chart have been in circulation for some time. Still, this is a nice exercise for elementary school mathematics students to learn about the graphical representation of fractions using pie charts. They can also get some introduction to angles as parts of a circle.
A circular sector is the portion of the disk enclosed by two radii and the included arc of the circle. Since the complete circle encompasses 360
°
, the fraction of the pie eaten or uneaten is equal to the angle of the sector divided by 360
°
. A 90
°
angle is called a right angle, while 180
°
is a straight angle.
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