Describe an enlargement with a negative scale factor
Describe an enlargement with a negative scale factor
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Lesson details
Key learning points
- In this lesson, we will learn how to describe enlargements with a negative scale factor.
Licence
This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.
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3 Questions
Q1.
An enlargement with a negative scale factor will invert (flip upside down) the shape?
B
C
Q2.
An enlargement with a negative scale factor will make the shape smaller?
A
C
Q3.
What scale factor does this enlargement from Shape A to shape B show?
-3
2
3
3 Questions
Q1.
Shape A maps to shape B in an enlargement, calculate the scale factor.
-1
1
2
Q2.
Why have corresponding vertices been joined up in shapes A and B with straight lines in this enlargement?
They do not do anything useful.
They get extra marks in a test.
Q3.
The point at (-2,-1) is enlarged by a scale factor of -2 from the centre of enlargement at (0,0). What will the new coordinate of the point be?
(-4,-2)
(0,0)
(2,1)