Constructing Pie Graph

A pie graph is used to show parts of a whole.

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In a pie graph, all the sections should have equal sizes.

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A pie graph is useful for comparing changes over time.

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The total percentage of all sections in a pie graph should equal 100%.

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You need to use a protractor to measure the angles of each section in a pie graph.

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A pie graph can only display data with two categories.

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