# Elements of Architecture

## Geometric Shapes in Architecture

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## Perimeter of a Polygon

The

*perimeter*of a polygon is the distance around the “rim” or edge of the figure. Linear units such as inches, feet, meters or miles are used to measure perimeter. To find the perimeter of a polygon, add the lengths of all its sides.
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Example:
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Find the perimeter of a room that is 23 feet long and 15 feet wide.

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Solution:
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Perimeter 23 23 15 15 76 feet

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Exercises:
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Find the perimeter of each of the following figures:

1.)

2.)

3.)

4.)

(figure available in print form)

(figure available in print form)

- 5.) A rectangular swimming pool is 24 2/3 feet long and 15 5/6 feet wide. How many feet of fencing are needed to enclose the pool?
- 6.) A room is 18.6 feet long and 12.4 feet wide. How many feet of molding are needed to go around the rooms

7.) In the following floor plan of a house, find the perimeter of each room and the perimeter of the entire building.