GED Math Practice Test

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What is the perimeter of a figure?

  1. The length of each side of the figure

  2. The sum of the lengths of all sides of the figure

  3. The area covered by the figure

  4. The width of the figure

The correct answer is: The sum of the lengths of all sides of the figure

The perimeter of a figure is indeed defined as the sum of the lengths of all sides of the figure. This definition encompasses all the straight edges that create the boundary of a shape. For any polygon, calculating the perimeter involves adding together the lengths of each individual side, which gives the total distance around the figure. This is true regardless of the shape, whether it's a triangle, rectangle, or any other polygon. The other options do not accurately reflect the definition of perimeter. For instance, stating the length of each side doesn't provide a total measurement. Additionally, mentioning the area disregards the linear measurement necessary for perimeter. Lastly, the width refers specifically to one dimension of a figure, not the full boundary measurement provided by perimeter.

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