Enlargements (Leaving Cert Mathematics): Flashcards
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13 cards from this deck
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Practise the cards
13 cards from this deck
What does enlargement do to a shape?
What does enlargement do to a shape?
Changes size while preserving proportions
What does the scale factor determine?
What does the scale factor determine?
How much bigger or smaller the shape becomes
Effect of scale factor greater than
Effect of scale factor greater than
Shape gets larger
Effect of scale factor between and
Effect of scale factor between and
Shape gets smaller
Effect of negative scale factor
Effect of negative scale factor
Shape is enlarged and flipped (reflected)
What does scale factor of mean?
What does scale factor of mean?
New shape is three times as large
What does scale factor of mean?
What does scale factor of mean?
New shape is half the size of original
Two things needed to describe an enlargement
Two things needed to describe an enlargement
Centre of enlargement and scale factor
What is the centre of enlargement?
What is the centre of enlargement?
Fixed point from which the shape is enlarged
What does the scale factor tell you?
What does the scale factor tell you?
How much the shape has been enlarged or reduced
Distance relationship with scale factor
Distance relationship with scale factor
Distance from centre is twice as much
Distance relationship with scale factor
Distance relationship with scale factor
Distance from centre is one-third as much
What type of scale factor makes shape smaller?
What type of scale factor makes shape smaller?
Fractional scale factor (less than )