A pie chart can show collected data in sectors. Each sector can be labelled, or can be colour coded with a key. When drawing a pie chart, a protractor will be used to draw the angles accurately. Being ...
It's one of those things most people remember from their school days. The angles in a triangle always add up to 180˚. And a right-angled triangle always has one angle that is 90°, so the other two ...
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