Similar shapes are all about the scale. Given seven problems, pupils use scale factors to determine measurements within similar shapes. While solving the problem, scholars also determine whether two figures are similar and use area and volume scale factors to find the surface area and volume of a similar solid. The resource is part of a larger series designed to review for the General Certificate of Secondary Education math assessment.

Concepts

similar figures, similar triangles, similarity, scale factors, scale, length, area, volume

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Additional Tags

math

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Instructional Ideas

• Work some problems to demonstrate the calculation of the area and volume scale factors

Classroom Considerations

• Individuals should know how to determine scale factors
• Assumes the class is comfortable operating with fractions

Pros

• Answer key includes cues on determining whether to multiply or divide
• Worksheet includes room to do the work

Cons

• None

Common Core

7.G.A.1 HSG-SRT.A.2 MP2 MP6