Question

Andrew says the scale factor used was 3\2. Annie says the scale factor used was 2\3.Which student is correct and why?

Answer 1

Answer:

Annie is right, beause the coordinates of the points A'B'C' are 2/3 of the coodinates of the points ABC

and the size of the triangle A'B'C' is 2/3 of the size of the triangle ABC

for example:

Side AC lenght is 6 units and A'C' is 4

To go from 6 to 4, the factor must be 2/3