Perimeter of Rectilinear Figures

Rectilinear figures are polygons that have straight sides and angles. The perimeter of a rectilinear figure is the distance around its outer boundary. In other words, it is the sum of the lengths of all the sides of the figure.

Calculating Perimeter

To calculate the perimeter of a rectilinear figure, you need to add up the lengths of all the sides. Here's how you can do it:

1. Identify the sides: Look at the rectilinear figure and identify all the sides that make up its boundary. These sides can be horizontal, vertical, or diagonal.

2. Measure the sides: Use a ruler or any other measuring tool to measure the length of each side. Make sure to measure in the same unit (e.g., centimeters or meters) for consistency.

3. Add up the lengths: Once you have measured all the sides, add up their lengths. This will give you the perimeter of the rectilinear figure.

Example

Let's take an example to understand how to calculate the perimeter of a rectilinear figure. Consider the following figure:

```
5 cm
_______________
| |
| 7 cm |
|_______________|
3 cm
```

In this figure, there are three sides: one horizontal side measuring 5 cm, one vertical side measuring 7 cm, and one horizontal side measuring 3 cm. To calculate the perimeter, we add up the lengths:

Perimeter = 5 cm + 7 cm + 3 cm
Perimeter = 15 cm

Therefore, the perimeter of this rectilinear figure is 15 cm.

Conclusion

The perimeter of a rectilinear figure is the sum of the lengths of all its sides. By identifying the sides and measuring their lengths, you can calculate the perimeter accurately. It is an important concept in mathematics and helps in understanding the boundary of rectilinear figures.

Remember to practice calculating perimeters of different rectilinear figures to strengthen your understanding of this concept.