Q1:

Under an enlargement the number of invariant points is: 
A. 0 B. 1 C. 2 D. infinite 
Answer 1:


Q2:

A square has an area of 4 units^{2}. Under an enlargement, scale factor 2, what is the area of the image of the square 
A. 8 units^{2}B. 16 units^{2}C. 32 units^{2}D. 64 units^{2} 
Answer 2:


Q3:

The object and the image remain the same size in: 
A. some enlargements B. all enlargements C. no enlargements D. most enlargements 
Answer 3:


Q4:

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:


Q5:

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? 
A. 2.5 B. 9 C. 0.4 D.^{ }90 
Answer 5:


Q6:

What is the centre of the enlargement that maps triangle ADB to triangle EDC? 
A. E B. C C. D D. B 
Answer 6:


Q7:

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:


Q8:

A shape and its image after enlargement are 
A. congruent B. similar C. parallel D. perpendicular 
Answer 8:


Q9:

A line and its image under an enlargement are 
A. parallel B. perpendicular C. at right angles D. unmoved 
Answer 9:


Q10:

Similar figures have 
A. equal angles B. proportional sides C. same shape D. all of the above 
Answer 10:

