📝 Similar Figures: Practice B (G-SRT.A.2)

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Use similarity transformations; find missing sides using scale factors. Solve each problem.

1. Triangles are similar. Sides 4 and 9 correspond to 12 and x. x = ___

2. Triangles are similar. Sides 4 and 7 correspond to 10 and x. x = ___

3. Triangles are similar. Sides 7 and 9 correspond to 21 and x. x = ___

4. Triangles are similar. Sides 12 and 10 correspond to 36 and x. x = ___

5. Triangles are similar. Sides 6 and 8 correspond to 24 and x. x = ___

6. Triangles are similar. Sides 9 and 6 correspond to 22.5 and x. x = ___

7. Triangles are similar. Sides 5 and 6 correspond to 15 and x. x = ___

8. Triangles are similar. Sides 11 and 4 correspond to 22 and x. x = ___

9. Triangles are similar. Sides 10 and 12 correspond to 40 and x. x = ___

10. Triangles are similar. Sides 4 and 4 correspond to 6 and x. x = ___

11. Triangles are similar. Sides 5 and 8 correspond to 15 and x. x = ___

12. Triangles are similar. Sides 7 and 2 correspond to 17.5 and x. x = ___

Answer key: 1) 27 · 2) 17.5 · 3) 27 · 4) 30 · 5) 32 · 6) 15 · 7) 18 · 8) 8 · 9) 48 · 10) 6 · 11) 24 · 12) 5

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Worksheets › Grade 10 Math (Geometry) › Similar Figures › Similar Figures

Grade 10 (ages 15–16)Numbers & mathsFree printable PDF

About this grade 10 worksheet

Free Grade 10 Geometry math worksheet (Common Core G-SRT.A.2): similar figures — a second set of twelve practice problems, with answer key. Skill: Use similarity transformations; find missing sides using scale factors. Level: Grade 10 — also suits Year 11 (UK).

For teachers: skills & standards

CCSS G-SRT.A.2: Use similarity transformations; find missing sides using scale factors
Works as a morning-work page, a centre/station activity, homework or an early-finisher task.

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What age is it for?

It is designed for Grade 10 (ages 15–16), but use it with any child who is ready.

What skills does it build?

Use similarity transformations; find missing sides using scale factors.

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