Class 9 Mathematics · Chapter 9 · Test 2
Similar Figures
40 MCQs
40 questions · 35 min · 40 marks
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Sample questions
The first 5 of 40. Try each one, then tap to see the answer.
Question 1
The ratio of the areas of two similar figures is equal to:
- Athe ratio of their corresponding lengths
- Bthe cube of that ratio
- Cthe square of the ratio of their corresponding lengths
- Dthe sum of their lengths
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Answer: C
A₁/A₂ = (l₁/l₂)².
Question 2
The ratio of the areas of two similar polygons is:
- Aequal to the ratio of their perimeters
- Bequal to the square of the ratio of their corresponding sides
- Cequal to the cube of the ratio of their corresponding sides
- Dequal to the sum of their corresponding sides
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Answer: B
Areas are in the square of the ratio of corresponding sides.
Question 3
The ratio of the volumes of two similar solids is equal to:
- Athe ratio of their lengths
- Bthe square of that ratio
- Cthe sum of the lengths
- Dthe cube of the ratio of their corresponding lengths
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Answer: D
V₁/V₂ = (l₁/l₂)³.
Question 4
The ratio of the masses of two similar solids of the same material equals:
- Athe ratio of their volumes
- Bthe ratio of their areas
- Cthe ratio of their lengths
- D1
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Answer: A
Mass is proportional to volume.
Question 5
If the scale factor of two similar figures is k then the ratio of their areas is:
- Ak
- B2k
- Ck²
- Dk³
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Answer: C
Areas change by the square of the scale factor.
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