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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:
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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?
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A. 4
B. 16
C. 49
D. 3
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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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