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The position of the enlarged shape is described by the centre of enlargement (0).
To enlarge the triangle with a scale factor of 2 and centre of enlargement 0, you should do the following:
For a scale factor of 2:
0A' = 2 × 0A
0B' = 2 × 0B
0C' = 2 × 0C
For a scale factor of 3:
0A' = 3 × 0A
0B' = 3 × 0B
0C' = 3 × 0C
Sometimes the centre of enlargement lies on or within the original shape. Look at the following examples:
What are the scale factors of enlargement for shapes A) and B)?
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