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A scale factor (SF) more than 1 increases the size of an object, so SF of 2 doubles the size. A scale factor less than 1 reduces the size of an object, so a SF ½ halves the size. Two pieces of information are required to ‘enlarge’ a shape. 1. Centre of enlargement. 2. Scale factor. X.
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A scale factor (SF) more than 1 increases the size of an object, so SF of 2 doubles the size. A scale factor less than 1 reduces the size of an object, so a SF ½ halves the size. Two pieces of information are required to ‘enlarge’ a shape. 1. Centre of enlargement 2. Scale factor X Centre of enlargement. Construction lines