Q1:
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Under an enlargement the number of invariant points is |
A. 0 B. 1 C. 2 D. infinite |
Answer 1: |
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Q2:
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In the diagram, the small rectangle is enlarged, centre O. What is the scale factor?
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A. 2 B. 4 C. 8 D. 16 |
Answer 2: |
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Q3:
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The scale factor for an enlargement is 0.5. Compared to the object, the image is: |
A. smaller B. larger C. the same size D. neither of the above |
Answer 3: |
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Q4:
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A line AB is 7 cm long. Under an enlargement with a scale factor of 3, the length of the image of AB is |
A. 10 cm B. 21 cm C. 4 cm D. 49 cm |
Answer 4: |
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Q5:
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If a square has sides 3.5 m long and its image under an enlargement has sides 14 m long, what is the scale factor for the enlargement? |
A. 4 B. 16 C. 49 D. 3 |
Answer 5: |
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Q6:
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What is the centre of the enlargement that maps triangle ADB to triangle EDC? |
A. E B. C C. D D. B |
Answer 6: |
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Q7:
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What would the scale factor be for the enlargement described in question 6? |
A. 2 B. 0.5 C. 3 D. 0.25 |
Answer 7: |
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Q8:
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A shape and its image after an enlargement are: |
A. congruent B. the same shape C. parallel D. perpendicular |
Answer 8: |
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Q9:
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Under an enlargement, the centre of enlargement is: |
A. invariant B. perpendicular C. at right angles D. parallel |
Answer 9: |
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Q10:
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What is changed after an enlargement? |
A. colour B. angles C. shape D. size |
Answer 10: |
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