Find missing side lengths and calculate the perimeter of each irregular shape.

Worksheet with six irregular polygon shapes, each with some side lengths labeled, requiring students to find missing lengths and calculate the perimeter.

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Show Answer Key & Explanations Step-by-step solution for: 7LRIS WS #8M - Perimeter and Area of Composite Figures - Janelle ...

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1. The missing side lengths are 3 in (top left), 3 in (top right), 3 in (bottom left), and 3 in (bottom right). The perimeter is 56 in.
2. The missing side lengths are 5 in (bottom left), 5 in (bottom right), and 8 in (top center). The perimeter is 52 in.
3. The missing side lengths are 8 in (top left), 8 in (top right), 8 in (bottom left), and 8 in (bottom right). The perimeter is 70 in.
4. The missing side lengths are 7 in (top center), 7 in (bottom center), 5 in (top left), and 5 in (top right). The perimeter is 60 in.
5. The missing side lengths are 8 in (top left), 8 in (top right), 8 in (bottom left), and 8 in (bottom right). The perimeter is 80 in.
6. The missing side lengths are 3.1 cm (top left), 3.4 cm (right center), 3.8 cm (bottom center), and 3.7 cm (bottom right). The perimeter is 21.0 cm.

Parent Tip: Review the logic above to help your child master the concept of perimeter and area of composite figures worksheet answers.

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