Find the perimeter of composite figures composed of triangles and quadrilaterals.

Find the Perimeter of Composite Figures (Triangles and Quadrilaterals)

Discussion: Perimeter of Composite Figures

In this lesson, we will learn how to find the perimeter of composite figures, which are made up of both triangles and quadrilaterals. To find the perimeter, you add the lengths of all the outer sides of the figure.

Steps to find the perimeter of composite figures:

• Identify the different shapes that make up the composite figure (e.g., triangles, rectangles, trapezoids, etc.).
• Find the lengths of all outer sides.
• Add up all the lengths to find the perimeter of the composite figure.

In some cases, you may need to use the Pythagorean theorem to find the length of a side of the triangle if it is not directly given. Once you know the lengths, you can easily add them to get the perimeter.

Introduction to Finding Perimeter

Now that you’ve learned how to calculate the perimeter of composite figures, it's time to test your knowledge!

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