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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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A square has an area of 4 units2.
Under an enlargement, scale
factor 2, what is the area of the image of the square
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A. 8 units2
B. 16 units2
C. 32 units2
D. 64 units2 |
Answer 2:
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Q3:
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The object and the image remain the same size in:
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A. some enlargements
B. all enlargements
C. no enlargements
D. most enlargements |
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 0.5, the length of the image of AB is |
A. 35 cm
B. 3.5 cm
C. 14 cm
D. 7 cm |
Answer 4:
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Q5:
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If a square has sides 6 m long and its image under an enlargement
has sides 15 m long, what is the scale factor for the enlargement?
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A. 2.5
B. 9
C. 0.4
D. 90
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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 enlargement are |
A. congruent
B. similar
C. parallel
D. perpendicular |
Answer 8:
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Q9:
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A line and its image under an enlargement are |
A. parallel
B. perpendicular
C. at right angles
D. unmoved |
Answer 9:
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Q10:
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Similar figures have |
A. equal angles
B. proportional sides
C. same shape
D. all of the above |
Answer 10:
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