Enlargement
Move the green point. Rectangle ABCD is enlarged to give rectangle A'B'C'D'.
What happens to the blue rectangle compared to the yellow one when the green point is at "2"?
Choose...
Nothing much
It is double the width
It is 4 times the width
It doubles in area
It trebles in area
It is 4 times the area
Result:
Please enable Java for an interactive construction (with Cinderella).
The length of the green line is called the
scale factor
.
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MathsNet
2001
Enlargement